ci: publish workflow

.github/workflows/publish.yml

@@ -0,0 +1,28 @@
+name: publish
+
+on: [push]
+
+env:
+  PACK_VERSION: 0.33.2
+
+jobs:
+  push-to-ghcr:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+      - name: setup-pack
+        run: |
+          curl -sL "https://github.com/buildpacks/pack/releases/download/v$PACK_VERSION/pack-v$PACK_VERSION-linux.tgz" -o pack.tgz
+          tar -zxf pack.tgz
+          rm pack.tgz
+          sudo mv pack /usr/bin/pack
+          pack --version
+      - name: install yj
+        run: |
+          curl -sL "https://github.com/sclevine/yj/releases/download/v5.1.0/yj-linux-amd64" -o yj
+          chmod +x yj
+      - name: get buildpack version
+        run: cat playwright/python/buildpack.toml | ./yj -t | jq