chore: move Docker publishing into a separate workflow (#8731)

it looks like the docker publishing steps had an error
that prevented the entire workflow for running. Let's
extract the docker pubishing into a separate workflow until
we are sure it's stable.

.github/workflows/publish-docker.yml

@@ -0,0 +1,45 @@
+name: Publish Docker image
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - v*
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Install dependencies
+        run: npm install
+      - name: Build puppeteer
+        run: npm run build
+      # Based on https://docs.github.com/en/actions/publishing-packages/publishing-docker-images.
+      - name: Log in to the Container registry
+        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      - name: Pack Puppeteer for docker
+        run: docker/pack.sh
+      - name: Build and push the Docker image
+        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+        with:
+          context: ./docker
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/publish.yml

@@ -1,14 +1,11 @@
 name: Publish
 
 on:
+  workflow_dispatch:
   push:
     tags:
       - v*
 
-env:
-  REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
-
 jobs:
   publish:
     runs-on: ubuntu-latest
@@ -40,25 +37,3 @@ jobs:
           npm config set registry 'https://wombat-dressing-room.appspot.com/'
           npm config set '//wombat-dressing-room.appspot.com/:_authToken' '${NPM_TOKEN}'
           npm publish
-      # Based on https://docs.github.com/en/actions/publishing-packages/publishing-docker-images.
-      - name: Log in to the Container registry
-        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Extract metadata (tags, labels) for Docker
-        id: meta
-        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
-        with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-      - name: Pack Puppeteer for docker
-        run: docker/pack.sh
-      - name: Build and push the Docker image
-        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
-        working-directory: ./docker
-        with:
-          context: .
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}