enable CI for PR (#81)

.github/workflows/build-image.yaml

@@ -62,7 +62,6 @@ jobs:
         id: buildx
         uses: docker/setup-buildx-action@v2
       - name: Login to GHCR
-        if: github.event_name != 'pull_request'
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
@@ -76,18 +75,16 @@ jobs:
           context: .
           platforms: ${{ matrix.docker_build_arch }}
           labels: ${{ steps.meta.outputs.labels }}
-          outputs: type=image,name=ghcr.io/${{env.REPOSITORY_LC}},push-by-digest=true,name-canonical=true,push=${{ github.event_name != 'pull_request' }}
+          outputs: type=image,name=ghcr.io/${{env.REPOSITORY_LC}},push-by-digest=true,name-canonical=true,push=true
           cache-from: type=gha
           cache-to: type=gha,mode=max
 
       - name: Export digest
-        if: github.event_name != 'pull_request'
         run: |
           mkdir -p /tmp/digests
           digest="${{ steps.build-and-push.outputs.digest }}"
           touch "/tmp/digests/${digest#sha256:}"
       - name: Upload digest
-        if: github.event_name != 'pull_request'
         uses: actions/upload-artifact@v3
         with:
           name: digests
@@ -106,17 +103,14 @@ jobs:
         env:
           REPOSITORY: '${{ github.repository }}'
       - name: Download digests
-        if: github.event_name != 'pull_request'
         uses: actions/download-artifact@v3
         with:
           name: digests
           path: /tmp/digests
       - name: Set up Docker Buildx
-        if: github.event_name != 'pull_request'
         uses: docker/setup-buildx-action@v2
       - name: Docker meta
         id: meta
-        if: github.event_name != 'pull_request'
         uses: docker/metadata-action@v4
         with:
           # generate Docker tags based on the following events/attributes
@@ -132,18 +126,15 @@ jobs:
           images: ghcr.io/${{env.REPOSITORY_LC}}
       - name: Login to Docker Hub
         uses: docker/login-action@v2
-        if: github.event_name != 'pull_request'
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Create manifest list and push
         working-directory: /tmp/digests
-        if: github.event_name != 'pull_request'
         run: |
           docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
             $(printf 'ghcr.io/${{env.REPOSITORY_LC}}@sha256:%s ' *)
       - name: Inspect image
-        if: github.event_name != 'pull_request'
         run: |
           docker buildx imagetools inspect ghcr.io/${{env.REPOSITORY_LC}}:${{ steps.meta.outputs.version }}