feat: allow to provide own Dockerfile

Author: reshnm

Taskfile_library.yaml

@@ -43,6 +43,7 @@ vars:
   MODULE_NAME:
     sh: 'cat "{{.ROOT_DIR2}}/go.mod" | grep "module " | sed "s/module //" | sed -E "s/[[:blank:]].*//"'
   NESTED_MODULES: '{{.NESTED_MODULES | default "" }}'
+  DOCKERFILE: '{{.TASKFILE_DIR2}}/Dockerfile'
 
   LOCALBIN: '{{ env "LOCALBIN" | default ( .LOCALBIN | default (print .ROOT_DIR2 "/bin") ) }}'
   LOCALTMP: '{{ env "LOCALTMP" | default ( .LOCALTMP | default (print .ROOT_DIR2 "/tmp") ) }}'

tasks_build_img.yaml

@@ -82,10 +82,11 @@ tasks:
       - ARCH
       - IMAGE_BASE
       - DOCKER_BUILDER_NAME
+      - DOCKERFILE
     cmds:
     - 'echo "Building image {{.COMPONENT}}:{{.VERSION}}-{{.OS}}-{{.ARCH}}"'
     - '[[ "{{.OS}}" == "linux" ]] || { echo "The distroless base image does only support linux as operating system."; exit 1; }'
-    - 'cat "{{.TASKFILE_DIR2}}/Dockerfile" | sed "s/<component>/{{.COMPONENT}}/g" > "{{.ROOT_DIR2}}/Dockerfile.tmp"'
+    - 'cat "{{.DOCKERFILE}}" | sed "s/<component>/{{.COMPONENT}}/g" > "{{.ROOT_DIR2}}/Dockerfile.tmp"'
     - '( cd "{{.ROOT_DIR2}}"; docker buildx build --builder {{.DOCKER_BUILDER_NAME}} --load --build-arg COMPONENT={{.COMPONENT}} --platform {{.OS}}/{{.ARCH}} -t {{.IMAGE_BASE}}/{{.COMPONENT}}:{{.VERSION}}-{{.OS}}-{{.ARCH}} -f Dockerfile.tmp . )'
     - 'rm -f "{{.ROOT_DIR2}}/Dockerfile.tmp"'
     internal: true