ci: push dev docker image to packages (#384)

.github/workflows/dev-image.yml

@@ -32,6 +32,12 @@ jobs:
     if: contains(github.event.head_commit.message, '[skip ci]') == false
     steps:
       - uses: actions/checkout@v2.3.1
+      - name: Login to Packages
+        run: echo '${{ secrets.GITHUB_TOKEN }}' | docker login 'docker.pkg.github.com' -u 'peaceiris' --password-stdin
+      - run: make pull
+        if: github.event_name == 'pull_request'
       - run: make build
       - run: make cirun cmd="npm ci"
       - run: make ciall
+      - run: make push
+        if: github.ref == 'refs/heads/master'