Merge pull request #133 from SiziweLupondo/Docker_workflow

Docker workflow

.github/workflows/ubuntu.yml

@@ -0,0 +1,54 @@
+name: Build Docker Image-ubuntu
+
+on:
+  push:
+    branches:
+      - develop
+      - Docker_workflow
+  pull_request:
+    branches:
+       - develop
+       - Docker_workflow
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    - name: Log in to Docker Hub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Build Docker image
+      run: |
+        ls
+        pushd Docker
+        docker build -f Dockerfile.flint.ubuntu.18.04 -t moja/flint:ubuntu-18.04 .
+        popd
+
+    - name: Save Docker image as artifact
+      run: |
+        docker save moja/flint:ubuntu-18.04 | gzip > flint_docker_image.tar.gz
+      shell: bash
+
+    - name: Upload Docker image artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: docker-image
+        path: flint_docker_image.tar.gz