Dockerfile

### STAGE 1: Build ###

# We label our stage as ‘builder’
FROM node:14-alpine as builder

COPY package.json package-lock.json ./

## Storing node modules on a separate layer will prevent unnecessary npm installs at each build

RUN npm ci && mkdir /ng-app && mv ./node_modules ./ng-app

WORKDIR /ng-app

COPY . .

## Build the angular app in production mode and store the artifacts in dist folder

#RUN npm run ng build -- --output-path=dist --base-href ./

# with prod option
#RUN npm run ng build -- --prod --output-path=dist --base-href ./
# RUN node --max_old_space_size=8192 node_modules/@angular/cli/bin/ng --configuration production --output-path=dist --base-href ./
RUN npm run ng build -- --configuration production --output-path=dist --base-href ./

### STAGE 2: Setup ###

FROM nginx:1.14.1-alpine

## Copy our default nginx config
COPY nginx.conf /etc/nginx/nginx.conf

## Remove default nginx website
RUN rm -rf /usr/share/nginx/html/*

## From ‘builder’ stage copy over the artifacts in dist folder to default nginx public folder
COPY --from=builder /ng-app/dist /usr/share/nginx/html

##CMD ["nginx", "-g", "daemon off;"]
CMD ["/bin/sh",  "-c",  "envsubst < /usr/share/nginx/html/dashboard-config-template.json > /usr/share/nginx/html/dashboard-config.json && exec nginx -g 'daemon off;'"]