refactor: use yarn in dockerfile (#309)

* refactor: use yarn in dockerfile

* refactor: upgrade node to 12.x

Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1
-FROM node:10 AS build
+FROM node:12 AS build
 
 # Create app directory
 WORKDIR /usr/src/app
@@ -10,12 +10,13 @@ ENV PATH /usr/src/app/node_modules/.bin:$PATH
 # A wildcard is used to ensure both package.json AND package-lock.json are copied
 # where available (npm@5+)
 COPY package*.json ./
-RUN npm install
+COPY yarn.lock ./
+RUN yarn install
 
 COPY . .
 
 # Build the app for production
-RUN npm run build
+RUN yarn build
 
 # Stage 2
 # Use Nginx to serve files

Dockerfile.cdpx

@@ -1,10 +1,11 @@
-FROM node:10 AS build
+FROM node:12 AS build
 WORKDIR /usr/src/app
 ENV PATH /usr/src/app/node_modules/.bin:$PATH
 COPY package*.json ./
-RUN npm install
+COPY yarn.lock ./
+RUN yarn install
 COPY . .
-RUN npm run build
+RUN yarn build
 FROM nginx:1.18.0-alpine
 WORKDIR /usr/src/app
 COPY --from=build /usr/src/app/run.sh .

azure-pipelines.yml

@@ -12,7 +12,7 @@ pool:
 steps:
 - task: NodeTool@0
   inputs:
-    versionSpec: '10.x'
+    versionSpec: '12.x'
   displayName: 'Install Node.js'
 
 - script: |

package.json

@@ -112,7 +112,7 @@
         "webpack-merge": "^4.2.2"
     },
     "engines": {
-        "node": ">=10.14.2",
+        "node": ">=12.13.1",
         "npm": ">=6.4.1"
     }
 }