chore: GitHub Build Docker Image

* On PR, ensure that the Docker image can be build
* On push into main, build and push the docker image as an unstable version
* On tagging, tag the docker image with a release tag

Author: cbolles

.github/workflows/on-pr.yaml

@@ -112,3 +112,15 @@ jobs:
         with:
           name: cypress-videos
           path: cypress/videos
+
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+      - name: Verify Build Works
+        uses: docker/build-push-action@v3
+        with:
+          push: false

.github/workflows/on-push-main.yaml

@@ -0,0 +1,28 @@
+name: Handle Push to Main
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    name: Build And Push to Docker Hub
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          push: true
+          tags: hicsail/signlab:unstable

.github/workflows/on-release.yaml

@@ -0,0 +1,28 @@
+name: Release Actions
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    name: Build And Push to Docker Hub
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          push: true
+          tags: hicsail/signlab:${{github.ref_name}},hicsail/signlab:latest