Update image-build.yml

.github/workflows/image-build.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Create safe tag for image
         id: safe_tag
         run: |
-          if [ "${{ github.event_name }}" == "pull_request" ]; then
+          if [ "${{ github.event_name }}" == "pull_request" && "${{ github.event.pull_request.head.ref }}" != "main" ]; then
             echo "SAFE_TAG=$(echo ${{ github.event.pull_request.head.ref }} | sed 's/[^a-zA-Z0-9.]/-/g')-${{ github.run_id }}-${{ github.run_number }}" >> $GITHUB_OUTPUT
           else
             echo "SAFE_TAG=$(echo ${{  inputs.tag }} | sed 's/[^a-zA-Z0-9.]/-/g')" >> $GITHUB_OUTPUT
@@ -45,7 +45,7 @@ jobs:
       - name: Output VERSION_REF
         id: output_version_ref
         run: |
-          if [ "${{ github.event_name }}" == "pull_request" ]; then
+          if [ "${{ github.event_name }}" == "pull_request" && "${{ github.event.pull_request.head.ref }}" != "main" ]; then
             # if on a PR we need to get the current branch name
             echo "VERSION_REF=${{ github.event.pull_request.head.ref }}" >> $GITHUB_OUTPUT
           else
@@ -81,7 +81,7 @@ jobs:
           GH_TOKEN: ${{ github.token }}
         if: github.event_name == 'pull_request'
         run: |
-          gh pr comment ${{ github.event.pull_request.number }} --body "Image built and pushed to ghcr.io/ministryofjustice/hmpps-ldap-automation:${{ steps.safe_tag.outputs.SAFE_TAG }}"
+          gh pr comment ${{ github.event.pull_request.number }} --body "Image built and pushed to `ghcr.io/ministryofjustice/hmpps-ldap-automation:${{ steps.safe_tag.outputs.SAFE_TAG }}`"
 
       - name: Slack failure notification
         if: ${{ failure() }}