Add steps to prepare lowercase Docker image names for CI/CD workflows (#151)

Author: jeffcumpsty-tpx

.github/workflows/ci.yml

@@ -149,11 +149,19 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Prepare lowercase image name
+        id: lowercase
+        run: |
+          repo_owner="${{ github.repository_owner }}"
+          repo_name="${{ github.event.repository.name }}"
+          echo "repo_owner=$(echo "$repo_owner" | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_OUTPUT"
+          echo "repo_name=$(echo "$repo_name" | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_OUTPUT"
+
       - name: Extract Docker metadata & tags
         id: meta
         uses: docker/metadata-action@v5.10.0
         with:
-          images: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}
+          images: ghcr.io/${{ steps.lowercase.outputs.repo_owner }}/${{ steps.lowercase.outputs.repo_name }}
           tags: |
             type=sha,format=short
             type=ref,event=branch
@@ -168,7 +176,7 @@ jobs:
           image_ref=$(echo "$tags_raw" | tr ',' '\n' | grep ':sha-' | head -n 1)
 
           if [ -z "$image_ref" ]; then
-            image_ref="ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}:sha-${{ github.sha }}"
+            image_ref="ghcr.io/${{ steps.lowercase.outputs.repo_owner }}/${{ steps.lowercase.outputs.repo_name }}:sha-${{ github.sha }}"
           fi
 
           echo "image_ref=$image_ref" >> "$GITHUB_OUTPUT"

.github/workflows/deploy.yml

@@ -42,10 +42,18 @@ jobs:
           HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
         run: heroku stack:set container --app ${{ vars.HEROKU_STAGING_APP }}
 
+      - name: Prepare lowercase image name
+        id: lowercase
+        run: |
+          repo_owner="${{ github.repository_owner }}"
+          repo_name="${{ github.event.repository.name }}"
+          echo "repo_owner=$(echo "$repo_owner" | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_OUTPUT"
+          echo "repo_name=$(echo "$repo_name" | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_OUTPUT"
+
       - name: Pull tested image from GHCR & deploy to Heroku Staging
         env:
           HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
-          IMAGE_NAME: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}
+          IMAGE_NAME: ghcr.io/${{ steps.lowercase.outputs.repo_owner }}/${{ steps.lowercase.outputs.repo_name }}
         run: |
           SHORT_SHA=$(echo ${{ github.event.workflow_run.head_sha }} | cut -c1-7)
           echo "Deploying tested image: ${IMAGE_NAME}:sha-${SHORT_SHA} → ${{ vars.HEROKU_STAGING_APP }}"
@@ -94,10 +102,18 @@ jobs:
           HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
         run: heroku stack:set container --app ${{ vars.HEROKU_PROD_APP }}
 
+      - name: Prepare lowercase image name
+        id: lowercase
+        run: |
+          repo_owner="${{ github.repository_owner }}"
+          repo_name="${{ github.event.repository.name }}"
+          echo "repo_owner=$(echo "$repo_owner" | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_OUTPUT"
+          echo "repo_name=$(echo "$repo_name" | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_OUTPUT"
+
       - name: Pull tested image from GHCR & deploy to Heroku Production
         env:
           HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
-          IMAGE_NAME: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}
+          IMAGE_NAME: ghcr.io/${{ steps.lowercase.outputs.repo_owner }}/${{ steps.lowercase.outputs.repo_name }}
         run: |
           SHORT_SHA=$(echo ${{ github.event.workflow_run.head_sha }} | cut -c1-7)
           echo "Deploying tested image: ${IMAGE_NAME}:sha-${SHORT_SHA} → ${{ vars.HEROKU_PROD_APP }}"