Add postprocessing image creation github action and call it from isort

Author: youngdjn

.github/workflows/isort.yml

@@ -46,6 +46,11 @@ jobs:
     uses: ./.github/workflows/black.yml
 
   # Ensure publish-image runs after Black and Isort have completed
-  publish-image:
+  publish-utils-image:
     needs: [isort, black]
-    uses: ./.github/workflows/publish-image.yml
+    uses: ./.github/workflows/publish-utils-image.yml
+
+  # Ensure publish-custom-tasks-image runs after Black and Isort have completed
+  publish-custom-tasks-image:
+    needs: [isort, black]
+    uses: ./.github/workflows/publish-custom-tasks-image.yml

.github/workflows/publish-custom-tasks-image.yml

@@ -0,0 +1,57 @@
+name: Publish custom tasks image to Github Packages
+
+on:
+  push:
+    branches-ignore:
+      # Do not run on pushes to main, because this is separately triggred on pushes to main by the
+      # isort workflow, and we want to make sure it runs after isort, and not twice
+      - main
+  workflow_call:
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: open-forest-observatory/argo-workflow-custom-tasks
+
+jobs:
+  build-and-push-image:
+    if: github.repository == 'open-forest-observatory/ofo-argo'
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            # Tag with branch name on branch pushes
+            type=ref,event=branch
+            type=ref,event=tag
+            type=ref,event=pr
+            # Only apply latest tag to main branch
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: ./workflow-custom-tasks
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}