change tag variable name and add github metadata as labels (#1)

README.md

@@ -23,7 +23,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Deploy to Jamsocket
-        uses: jamsocket/[email protected].1
+        uses: jamsocket/[email protected].3
         with:
           jamsocket_api_token: ${{ secrets.JAMSOCKET_API_TOKEN }}
           jamsocket_account: my-jamsocket-account
@@ -43,7 +43,7 @@ The following options must be configured in order to make a deployment. As shown
 | jamsocket_service | The name of the Jamsocket service you are pushing your code to. | `with` | Yes |
 | docker_build_context | The path to the directory that your [Docker build should access](https://docs.docker.com/build/building/context/). This is often the directory the Dockerfile is in. | `with` | Yes |
 | dockerfile_path | The path to your Dockerfile. | `with` | Yes |
-| docker_tag | A custom tag for your Docker image. | `with` | No |
+| tag | A custom tag to apply to the image. If provided, this image will only be used when this tag is provided in the spawn request. This can be used for preview deploy-like functionality. | `with` | No |
 
 ## Deployment
 

action.yml

@@ -16,7 +16,7 @@ inputs:
   dockerfile_path:
     description: 'Path to your Dockerfile'
     required: true
-  docker_tag:
+  tag:
     description: 'Custom tag for your Docker image'
     required: false
     default: 'latest'
@@ -54,7 +54,12 @@ runs:
       with:
         images: new.jamcr.io/${{ inputs.jamsocket_account }}/${{ inputs.jamsocket_service }}
         tags: |
-          type=raw,value=${{ inputs.docker_tag }}
+          type=raw,value=${{ inputs.tag }}
+        labels: |
+          hash=${{ github.sha }}
+          message=${{ github.event.head_commit.message }}
+          branch=${{ github.ref_name }}
+          repository=${{ github.repository }}
 
     - name: Build and push Docker image
       uses: docker/build-push-action@v5
@@ -63,6 +68,7 @@ runs:
         file: ${{ inputs.dockerfile_path }}
         push: true
         tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
 
 branding:
   icon: 'check-circle'