build(docker): generate the new tag in itk_wasm_env.bash

This was blank otherwise.

Author: thewtex

itk_wasm_env.bash

@@ -10,6 +10,8 @@ if test "$OSTYPE" = "cygwin" || test "$OSTYPE" = "msys" || test "$OSTYPE" = "win
     export CXXFLAGS="/Zc:__cplusplus /Zc:preprocessor /DNOMINMAX"
 fi
 
+export ITK_WASM_DEV_DOCKER_TAG=${ITK_WASM_DEV_DOCKER_TAG:-$(echo $(date '+%Y%m%d')-$(git rev-parse --short HEAD))}
+
 export ITK_WASM_DCMTK_REPOSITORY=${ITK_WASM_DCMTK_REPOSITORY:-"https://github.com/InsightSoftwareConsortium/DCMTK"}
 export ITK_WASM_DCMTK_GIT_TAG=${ITK_WASM_DCMTK_GIT_TAG:-"93e6d1b20b476c388f0379245c8c6e96af7f16f4"}
 

pixi.toml

@@ -36,7 +36,7 @@ inputs = ["itk_wasm_env.*"]
 description = "Provide ITK_WASM environmental variables to the Docker image"
 
 [tasks.update-default-image-tag]
-cmd = "sed -i \"s/const defaultImageTag = '.*'/const defaultImageTag = '$new_tag'/g\" packages/core/typescript/itk-wasm/src/cli/default-image-tag.js"
+cmd = "sed -i \"s/const defaultImageTag = '.*'/const defaultImageTag = '$ITK_WASM_DEV_DOCKER_TAG'/g\" packages/core/typescript/itk-wasm/src/cli/default-image-tag.js"
 outputs = ["packages/core/typescript/itk-wasm/src/cli/default-image-tag.*"]
 description = "Update the default Docker image tag"