adding workflow/action to publish to ghcr

.github/workflows/publish-ghcr.yaml

@@ -0,0 +1,36 @@
+name: Docker Image creator for sassbot latest
+
+on:
+  push:
+    branches: [master]
+
+jobs:
+  build-and-push-x86:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: build and push image
+        run: |
+          docker login --username bombg --password ${{ secrets.GH_PAT }} ghcr.io
+          docker build . --tag ghcr.io/bombg/sassbot:latest
+          docker push ghcr.io/bombg/sassbot:latest
+  build-and-push-arm:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: bombg
+          password: ${{ secrets.GH_PAT }}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/sassbot-arm:latest
+          platforms: linux/arm/v7