Add GitHub workflows from Apollo

.github/workflows/main.yml

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+name: BuildTest
+on:
+  push:
+    branches:
+       - main
+  pull_request:
+    branches:
+       - main
+
+jobs:
+  docker-build-test-ubuntu:
+    runs-on: ubuntu-latest
+    name: BuildTestUbuntu
+    env:
+      PRCOMMITSHA : ${{ github.event.pull_request.head.sha }}
+      PRREPOSITORY: ${{ github.event.pull_request.head.repo.full_name }}
+    steps:
+      # First check out the repository to get the docker file
+      - name: Checkout
+        uses: actions/checkout@v2
+      # Print the context for this GitHub workflow
+      - name: PrintGithubContext
+        run: echo ${PRCOMMITSHA:-$GITHUB_SHA} ${PRREPOSITORY:-$GITHUB_REPOSITORY}
+      # Now build in a container with all deps
+      - name: DockerBuildTest
+        run: |
+             docker build -t ci-platypus-ubuntu \
+                          --build-arg build_git_sha=${PRCOMMITSHA:-$GITHUB_SHA} \
+                          --build-arg build_git_repo=${PRREPOSITORY:-$GITHUB_REPOSITORY} \
+                          docker/platypus

.github/workflows/weekly_build.yml

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+name: Publish Docker Images
+on:
+  workflow_dispatch:
+  schedule:
+    # Schedule to update image every Monday morning at 04:00.
+    - cron:  '00 4 * * 1'
+
+jobs:
+  push-platypus-deps-image-to-docker-hub:
+    name: DockerPublishPlatypusDeps
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        with:
+          images: alexanderianblair/platypus-deps
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+        with:
+          context: docker/platypus-deps/
+          file: docker/platypus-deps/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+  push-platypus-image-to-docker-hub:
+    name: DockerPublishPlatypus
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        with:
+          images: alexanderianblair/platypus
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+        with:
+          context: docker/platypus/
+          file: docker/platypus/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}