Use ubuntu-20.04 for the CI pipeline (#57)

* Use ubuntu-20.04 for the CI pipeline

* Add CI pipeline to publish the Docker image

Author: acs

.github/workflows/publish_docker_image.yml

@@ -0,0 +1,31 @@
+name: Publish Docker Image
+on:
+  release:
+    types:
+      - published
+jobs:
+  push_to_registry:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v2
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+        with:
+          username: ${{ secrets.DOCKER_HUB_USER }}
+          password: ${{ secrets.DOCKER_HUB_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        with:
+          images: alvarodelcastillo/covid19swarm
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/github-actions-tests.yml renamed to .github/workflows/tests.yml

@@ -1,8 +1,8 @@
-name: GitHub Actions Tests
+name: Run Tests
 on: [push, pull_request]
 jobs:
   Execute-Tests:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
       - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"