taking a stab at github actions

.github/workflows/docker-publish.yml

@@ -0,0 +1,39 @@
+---
+name: docker-publish
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main 
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - main 
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: joshkaiju/gophernicus
+      - name: Setup Docker build
+        uses: docker/setup-buildx-action@v2
+      - name: Login to Docker hub
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }} 
+          password: ${{ secrets.DOCKER_HUB_PASSWORD }} 
+      - name: Build and publish
+        uses: docker/build-push-action@v4
+        with:
+          push: ${{ github.event_name != 'pull_request' }} 
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+