diff --git a/8.4/buster/Dockerfile b/8.4/buster/Dockerfile
new file mode 100644
index 0000000..eeb86e4
--- /dev/null
+++ b/8.4/buster/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       buildpack-deps:buster
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian buster main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.4.4 cabal-install-3.0 \
+        ghc-8.4.4-prof libtinfo-dev && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.4/buster/slim/Dockerfile b/8.4/buster/slim/Dockerfile
new file mode 100644
index 0000000..63f85f7
--- /dev/null
+++ b/8.4/buster/slim/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       debian:buster
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian buster main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.4.4 cabal-install-3.0 \
+        zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.4/stretch/Dockerfile b/8.4/stretch/Dockerfile
new file mode 100644
index 0000000..c766a2a
--- /dev/null
+++ b/8.4/stretch/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       buildpack-deps:stretch
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian stretch main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.4.4 cabal-install-3.0 \
+        ghc-8.4.4-prof libtinfo-dev && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.4/Dockerfile b/8.4/stretch/slim/Dockerfile
similarity index 61%
rename from 8.4/Dockerfile
rename to 8.4/stretch/slim/Dockerfile
index 61222ef..f498973 100644
--- a/8.4/Dockerfile
+++ b/8.4/stretch/slim/Dockerfile
@@ -9,19 +9,16 @@ RUN apt-get update && \
     echo 'deb http://downloads.haskell.org/debian stretch main' > /etc/apt/sources.list.d/ghc.list && \
     apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
     apt-get update && \
-    apt-get install -y --no-install-recommends ghc-8.4.4 cabal-install-2.4 \
+    apt-get install -y --no-install-recommends ghc-8.4.4 cabal-install-3.0 \
         zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make && \
-    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v1.9.1/stack-1.9.1-linux-x86_64.tar.gz -o stack.tar.gz && \
-    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v1.9.1/stack-1.9.1-linux-x86_64.tar.gz.asc -o stack.tar.gz.asc && \
-    export GNUPGHOME="$(mktemp -d)" && \
-    gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys C5705533DA4F78D8664B5DC0575159689BEFB442 && \
-    gpg --batch --verify stack.tar.gz.asc stack.tar.gz && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
     tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
     /usr/local/bin/stack config set system-ghc --global true && \
     /usr/local/bin/stack config set install-ghc --global false && \
-    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz.asc /stack.tar.gz
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
 
-ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/2.4/bin:/opt/ghc/8.4.4/bin:$PATH
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
 
 ## run ghci by default unless a command is specified
 CMD ["ghci"]
diff --git a/8.6/buster/Dockerfile b/8.6/buster/Dockerfile
new file mode 100644
index 0000000..35e6530
--- /dev/null
+++ b/8.6/buster/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       buildpack-deps:buster
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian buster main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.6.5 cabal-install-3.0 \
+        ghc-8.6.5-prof libtinfo-dev && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.6/buster/slim/Dockerfile b/8.6/buster/slim/Dockerfile
new file mode 100644
index 0000000..2e49b19
--- /dev/null
+++ b/8.6/buster/slim/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       debian:buster
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian buster main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.6.5 cabal-install-3.0 \
+        zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.6/stretch/Dockerfile b/8.6/stretch/Dockerfile
new file mode 100644
index 0000000..985e742
--- /dev/null
+++ b/8.6/stretch/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       buildpack-deps:stretch
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian stretch main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.6.5 cabal-install-3.0 \
+        ghc-8.6.5-prof libtinfo-dev && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.6/Dockerfile b/8.6/stretch/slim/Dockerfile
similarity index 59%
rename from 8.6/Dockerfile
rename to 8.6/stretch/slim/Dockerfile
index c53dcb6..3067c64 100644
--- a/8.6/Dockerfile
+++ b/8.6/stretch/slim/Dockerfile
@@ -9,19 +9,16 @@ RUN apt-get update && \
     echo 'deb http://downloads.haskell.org/debian stretch main' > /etc/apt/sources.list.d/ghc.list && \
     apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
     apt-get update && \
-    apt-get install -y --no-install-recommends ghc-8.6.5 cabal-install-2.4 \
-        zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make openssh-client && \
-    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v1.9.3/stack-1.9.3-linux-x86_64.tar.gz -o stack.tar.gz && \
-    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v1.9.3/stack-1.9.3-linux-x86_64.tar.gz.asc -o stack.tar.gz.asc && \
-    export GNUPGHOME="$(mktemp -d)" && \
-    gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys C5705533DA4F78D8664B5DC0575159689BEFB442 && \
-    gpg --batch --verify stack.tar.gz.asc stack.tar.gz && \
+    apt-get install -y --no-install-recommends ghc-8.6.5 cabal-install-3.0 \
+        zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
     tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
     /usr/local/bin/stack config set system-ghc --global true && \
     /usr/local/bin/stack config set install-ghc --global false && \
-    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz.asc /stack.tar.gz
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
 
-ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/2.4/bin:/opt/ghc/8.6.5/bin:$PATH
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
 
 ## run ghci by default unless a command is specified
 CMD ["ghci"]
diff --git a/8.8/buster/Dockerfile b/8.8/buster/Dockerfile
new file mode 100644
index 0000000..01cac46
--- /dev/null
+++ b/8.8/buster/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       buildpack-deps:buster
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian buster main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.8.1 cabal-install-3.0 \
+        ghc-8.8.1-prof libtinfo-dev && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.8/buster/slim/Dockerfile b/8.8/buster/slim/Dockerfile
new file mode 100644
index 0000000..d850679
--- /dev/null
+++ b/8.8/buster/slim/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       debian:buster
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian buster main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.8.1 cabal-install-3.0 \
+        zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.8/stretch/Dockerfile b/8.8/stretch/Dockerfile
new file mode 100644
index 0000000..9f1ff8f
--- /dev/null
+++ b/8.8/stretch/Dockerfile
@@ -0,0 +1,24 @@
+## Dockerfile for a haskell environment
+FROM       buildpack-deps:stretch
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian stretch main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-8.8.1 cabal-install-3.0 \
+        ghc-8.8.1-prof libtinfo-dev && \
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/8.8/Dockerfile b/8.8/stretch/slim/Dockerfile
similarity index 64%
rename from 8.8/Dockerfile
rename to 8.8/stretch/slim/Dockerfile
index e76e293..a50944b 100644
--- a/8.8/Dockerfile
+++ b/8.8/stretch/slim/Dockerfile
@@ -10,17 +10,13 @@ RUN apt-get update && \
     apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
     apt-get update && \
     apt-get install -y --no-install-recommends ghc-8.8.1 cabal-install-3.0 \
-        zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make openssh-client && \
+        zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make && \
     curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz -o stack.tar.gz && \
-    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64.tar.gz.asc -o stack.tar.gz.asc && \
-    export GNUPGHOME="$(mktemp -d)" && \
-    gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys C5705533DA4F78D8664B5DC0575159689BEFB442 && \
-    gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys 2C6A674E85EE3FB896AFC9B965101FF31C5C154D && \
-    gpg --batch --trusted-key 0x575159689BEFB442 --verify stack.tar.gz.asc stack.tar.gz && \
+    echo "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673  stack.tar.gz" | sha256sum -c - && \
     tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
     /usr/local/bin/stack config set system-ghc --global true && \
     /usr/local/bin/stack config set install-ghc --global false && \
-    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz.asc /stack.tar.gz
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
 
 ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
 
diff --git a/Dockerfile.template b/Dockerfile.template
new file mode 100644
index 0000000..8617fa4
--- /dev/null
+++ b/Dockerfile.template
@@ -0,0 +1,34 @@
+## Dockerfile for a haskell environment
+{% if slim %}
+FROM       debian:{{distribution}}
+{% else %}
+FROM       buildpack-deps:{{distribution}}
+{% endif %}
+
+## ensure locale is set during build
+ENV LANG            C.UTF-8
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git && \
+    echo 'deb http://downloads.haskell.org/debian {{distribution}} main' > /etc/apt/sources.list.d/ghc.list && \
+    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA3CBA3FFE22B574 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends ghc-{{ghcVersion}} cabal-install-3.0 \
+{% if slim %}
+{# See https://github.c om/docker-library/buildpack-deps/blob/master/buster/Dockerfile #}
+{# And https://github.com/docker-library/buildpack-deps/blob/master/buster/scm/Dockerfile #}
+        zlib1g-dev libtinfo-dev libsqlite3-dev g++ netbase xz-utils make && \
+{% else %}
+        ghc-{{ghcVersion}}-prof libtinfo-dev && \
+{% endif %}
+    curl -fSL https://github.com/commercialhaskell/stack/releases/download/v{{stackVersion}}/stack-{{stackVersion}}-linux-x86_64.tar.gz -o stack.tar.gz && \
+    echo "{{stackSha256}}  stack.tar.gz" | sha256sum -c - && \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 && \
+    /usr/local/bin/stack config set system-ghc --global true && \
+    /usr/local/bin/stack config set install-ghc --global false && \
+    rm -rf "$GNUPGHOME" /var/lib/apt/lists/* /stack.tar.gz
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/cabal/3.0/bin:/opt/ghc/8.8.1/bin:$PATH
+
+## run ghci by default unless a command is specified
+CMD ["ghci"]
diff --git a/generate.hs b/generate.hs
new file mode 100644
index 0000000..81408e7
--- /dev/null
+++ b/generate.hs
@@ -0,0 +1,90 @@
+{-# LANGUAGE DeriveGeneric #-}
+-- | Script to generate dockerfiles. Obviously using Haskell.
+--
+-- TBW usage
+module Main (main) where
+
+import Control.Monad (forM_)
+import Data.Char (toLower)
+import Data.List (intercalate)
+import GHC.Generics (Generic)
+import System.FilePath ((</>), takeDirectory)
+import System.Directory (createDirectoryIfMissing)
+
+import Zinza
+
+params :: [(FilePath, Params)]
+params =
+    [ mk dist ver slim
+    | dist <- [Stretch ..]
+    , slim <- [True, False]
+    , ver  <- [ Version [8,8,1]
+              , Version [8,6,5]
+              , Version [8,4,4]
+              ]
+    ]
+  where
+    mk :: Distribution -> Version -> Bool -> (FilePath, Params)
+    mk dist gv slim = (,) fp Params
+        { pDistribution = dist
+        , pGhcVersion   = gv
+        , pSlim         = slim
+        -- See stack-shasum.sh
+        , pStackVersion = Version [2,1,3]
+        , pStackSha256  = "c724b207831fe5f06b087bac7e01d33e61a1c9cad6be0468f9c117d383ec5673"
+        }
+      where
+        dir = dispVersion (majorVersion gv) </> dispDistribution dist
+
+        fp | slim      = dir </> "slim" </> "Dockerfile"
+           | otherwise = dir </> "Dockerfile"
+
+main :: IO ()
+main = do
+    template <- parseAndCompileTemplateIO "Dockerfile.template"
+    forM_ params $ \(fp, p) -> do
+        contents <- template p
+        createDirectoryIfMissing True (takeDirectory fp)
+        writeFile fp contents
+
+-------------------------------------------------------------------------------
+-- Data types
+-------------------------------------------------------------------------------
+
+newtype Version = Version [Int]
+  deriving (Show)
+
+dispVersion :: Version -> String
+dispVersion (Version vs) = intercalate "." (map show vs)
+
+majorVersion :: Version -> Version
+majorVersion v@(Version [])      = v
+majorVersion v@(Version [_])     = v
+majorVersion v@(Version (x:y:_)) = Version [x,y]
+
+instance Zinza Version where
+    toType _ = TyString Nothing
+    toValue  = VString . dispVersion
+
+data Distribution = Stretch | Buster
+  deriving (Show, Enum, Bounded)
+
+dispDistribution :: Distribution -> String
+dispDistribution = map toLower . show
+
+instance Zinza Distribution where
+    toType _ = TyString Nothing
+    toValue  = VString . dispDistribution
+
+data Params = Params
+    { pDistribution :: Distribution
+    , pGhcVersion   :: Version
+    , pSlim         :: Bool
+    , pStackVersion :: Version
+    , pStackSha256  :: String
+    }
+  deriving (Show, Generic)
+
+instance Zinza Params where
+    toType  = genericToTypeSFP
+    toValue = genericToValueSFP
diff --git a/stack-shasum.sh b/stack-shasum.sh
new file mode 100644
index 0000000..08f3077
--- /dev/null
+++ b/stack-shasum.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+# Get stack, verify using GPG, calculate tarball sha256sum
+
+# Get keys
+#
+# gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys C5705533DA4F78D8664B5DC0575159689BEFB442
+# gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys 2C6A674E85EE3FB896AFC9B965101FF31C5C154D
+#
+
+STACKVER=2.1.3
+
+curl -fSL https://github.com/commercialhaskell/stack/releases/download/v${STACKVER}/stack-${STACKVER}-linux-x86_64.tar.gz -o stack.tar.gz && \
+curl -fSL https://github.com/commercialhaskell/stack/releases/download/v${STACKVER}/stack-${STACKVER}-linux-x86_64.tar.gz.asc -o stack.tar.gz.asc && \
+
+gpg --batch --trusted-key 0x575159689BEFB442 --verify stack.tar.gz.asc stack.tar.gz
+
+sha256sum stack.tar.gz
+