Add Docker build on PR (#27)

* Add build on PR

* Newline

Author: cjreed121

.github/workflows/docker-build-pr.yml

@@ -0,0 +1,15 @@
+name: Docker Build and Push
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  call-docker-build-push:
+    uses: submitty/action-docker-build/.github/workflows/[email protected]
+    with:
+      push: false
+      docker_org_name: submittyrpi
+      base_commit: ${{ github.event.pull_request.base.sha }}
+      head_commit: ${{ github.event.pull_request.head.sha }}