add option for custom-tag

README.md

@@ -20,6 +20,7 @@ While the action allows many stages to be pushed to the registry for future re-u
 | `stages` | **yes** | | Comma-separarted list of build stages. Each of these will be an explicit cache target for subsequent builds |
 | `server-stage` | **yes** | | Name of stage for server |
 | `tag-latest-on-default` | no | `true` | Automatically create a `latest` tag when run on the default branch |
+| `custom-tag` | no | ` ` | A user-defined tag to apply to successfully built and pushed images |
 | `testenv-stage` | no | | Name of stage for test environment |
 | `context` | no | `.` | Build context |
 | `dockerfile` | no | `Dockerfile` | Path to the Dockerfile |

action.yml

@@ -34,6 +34,10 @@ inputs:
     default: true
     description: Automatically create a "latest" tag when the action is run on the default branch (defaults to `true`)
     required: false
+  custom-tag:
+    default: ''
+    required: false
+    description: A user-defined tag to apply to successfully built and pushed images
   testenv-stage:
     required: false
     description: Docker target for testing