👷 Update CI image name for easier deployment

.github/workflows/docker.yml

@@ -3,6 +3,7 @@ name: Master docker CI
 
 on:
   push:
+    branches: [master]
     tags:
       - v*
   workflow_dispatch:
@@ -98,7 +99,6 @@ jobs:
       - name: Set up Docker 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