refactor: Update devcontainer image name construction in build-devcon…

…tainer.yml and test-devcontainer.yml

.github/shared/devcontainer-image-name/action.yaml

@@ -10,8 +10,8 @@ runs:
     - name: build image name
       shell: bash
       run: |
-        # construct IMAGE_NAME from repo owner/name and branch
+        # construct image_name from repo owner/name and branch
         # example value : "ghcr.io/IONOS-Wordpress/ionos-wordpress-develop-devcontainer"
-        IMAGE_NAME="ghcr.io/${GITHUB_REPOSITORY}-${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}-devcontainer"
-        # convert imagename to lowercase and provide it as step variable "image_name"
-        echo "::set-output name=image_name::${IMAGE_NAME@L}"
+        image_name="ghcr.io/${GITHUB_REPOSITORY}-${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}-devcontainer"
+        # convert image_name to lowercase and provide it as step variable "image_name"
+        echo "image_name=${image_name@L}" >> $GITHUB_OUTPUT

.github/workflows/build-devcontainer.yml

@@ -13,6 +13,14 @@ on:
     # only rebuild devcontainer image if files in ./github/** are changed
     paths:
       - '.github/**'
+  # make this workflow reusable from other workflows
+  workflow_call:
+    branches:
+      - main
+      - develop
+    # only rebuild devcontainer image if files in ./github/** are changed
+    paths:
+      - '.github/**'
 
 permissions:
   # write-all is too much, but we need to write to packages

.github/workflows/test-devcontainer.yml

@@ -9,6 +9,9 @@ on:
         default: 'echo "WP_ENV_HOME=${WP_ENV_HOME} !"'
 
 jobs:
+  build-devcontainer-image-if-outdated:
+    uses: ./.github/workflows/build-devcontainer.yml
+
   test:
     runs-on: ubuntu-latest
     steps: