added dockerfile, and ci-cd docker image build

Author: bmiddha

.github/workflows/docker.yml

@@ -0,0 +1,23 @@
+name: Docker CD
+
+on: push
+
+jobs:
+  build-image:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: registry-login
+      uses: actions/docker/login@master
+      env:
+        DOCKER_REGISTRY_URL: docker.pkg.github.com
+        DOCKER_USERNAME: ${{ secrets.REGISTRY_USERNAME }}
+        DOCKER_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
+    - name: build-image
+      uses: actions/docker/cli@master
+      with:
+        args: build -t docker.pkg.github.com/${{ github.repository }}/app .
+    - name: push-image
+      uses: actions/docker/cli@master
+      with:
+        args: push docker.pkg.github.com/${{ github.repository }}/app

.github/workflows/nodejs.yml

@@ -1,6 +1,6 @@
 name: Node CI
 
-on: [push]
+on: push
 
 jobs:
   build:

Dockerfile

@@ -0,0 +1,8 @@
+FROM node:10
+WORKDIR /usr/src/app
+COPY package*.json ./
+RUN npm install
+COPY . .
+RUN npm run build
+EXPOSE 8080
+CMD ["npm", "start"]