add pub script

.github/workflows/docker-pub.yml

@@ -0,0 +1,39 @@
+name: Docker Pub
+
+on: workflow_dispatch
+
+jobs:
+    name: Buid and push Docker image to GitHub Container registry
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v2
+
+      - name: Build Meta
+        run: echo "::set-output name=dtag::ghcr.io/barelyhuman/goblin:nightly"
+        id: meta
+
+      - name: Login to GitHub Container registry
+        uses: docker/login-action@v1
+        env:
+          GITHUB_USER: ${{ github.actor }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          registry: ghcr.io
+          username: $GITHUB_USER
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and Push Docker Image
+        env:
+          REGISTRY: ghcr.io
+          OWNER: barelyhuman
+          IMAGE_NAME: ${{ github.repository }}
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.dtag }}