multi-stage-node-dockerfile-with-tini

# slim does not work w/tini
# FROM node:10-slim as prod
FROM node:10.15-alpine as prod

ENV NODE_ENV=production

EXPOSE 3000

RUN apk add --no-cache tini

WORKDIR WORKDIR /app

COPY package*.json  ./

RUN npm install --only=production && npm cache clean --force

COPY . .

# ..use this in prod if want to prevent images from building as a result of failed tests
# RUN npm test

ENTRYPOINT ["/sbin/tini", "--"]

CMD ["node", "./bin/www"]

FROM prod as dev
ENV NODE_ENV=development
RUN npm install --only=development
CMD ["../node_modules/nodemon/bin/nodemon.js", "./bin/www", "--inspect=0.0.0.0:9229"]

FROM dev as test
ENV NODE_ENV=development
CMD ["npm", "test"]



# Build + run prod:
# docker build -t multistage --target prod . && docker run --init -p 3000:3000 multistage

# Build + run dev:
# docker build -t multistage:dev --target dev . && docker run --init -p 3000:3000 multistage:dev

# need the tini `--init` process for `ctrl + c`..stopping container


# Build + run test:
# docker build -t multistage:test --target test . && docker run --init  multistage:test