Construction and Deployment of a Docker image (#5)

Github action to create a docker file



* Using manual dispatch, updated user name for docker



* Update .dockerignore

---------

Co-authored-by: Jonathan Taylor <jonathan.taylor@stanford.edu>

.github/workflows/docker.yml

@@ -0,0 +1,35 @@
+name: Publish Docker image
+
+on:
+  workflow_dispatch:
+    inputs: null
+
+jobs:
+
+  push_to_registry:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: jetaylor74/ISLP_labs
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: docker/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}