docker build with multiple tags

Author: markkelnar

.github/workflows/deploy-docker-image.yml

@@ -39,7 +39,9 @@ jobs:
         with:
           context: .
           push: true
-          tags: ghcr.io/markkelnar/wp-graphql:${{ steps.vars.outputs.tag }}-wp${{ matrix.wordpress }}-php${{ matrix.php }}
+          tags: |
+            ghcr.io/markkelnar/wp-graphql:latest-wp${{ matrix.wordpress }}-php${{ matrix.php }}
+            ghcr.io/markkelnar/wp-graphql:${{ steps.vars.outputs.tag }}-wp${{ matrix.wordpress }}-php${{ matrix.php }}
           file: docker/app.Dockerfile
           build-args: |
             PHP_VERSION=${{ matrix.php }}