Dockerfile

###################
# BUILD FOR LOCAL DEVELOPMENT
###################

FROM --platform=linux/x86_64 node:18 As development
RUN curl -f https://get.pnpm.io/v6.16.js | node - add --global pnpm

WORKDIR /usr/src/app


RUN pnpm fetch --prod

COPY --chown=node:node . .
RUN pnpm install

USER node

###################
# BUILD FOR PRODUCTION
###################

FROM --platform=linux/x86_64  node:18-alpine As build

WORKDIR /usr/src/app

COPY --chown=node:node package*.json ./

# In order to run `npm run build` we need access to the Nest CLI which is a dev dependency. In the previous development stage we ran `npm ci` which installed all dependencies, so we can copy over the node_modules directory from the development image
COPY --chown=node:node --from=development /usr/src/app/node_modules ./node_modules

COPY --chown=node:node . .

# Run the build command which creates the production bundle
RUN npm run build

# Set NODE_ENV environment variable
ENV NODE_ENV production

# Running `npm ci` removes the existing node_modules directory and passing in --only=production ensures that only the production dependencies are installed. This ensures that the node_modules directory is as optimized as possible
RUN npm ci --only=production && npm cache clean --force

USER node

###################
# PRODUCTION
###################

FROM --platform=linux/x86_64  node:18-alpine As production

ENV APP_PORT 17323
EXPOSE 17323

# Copy the bundled code from the build stage to the production image
COPY --chown=node:node --from=build /usr/src/app/node_modules ./node_modules
COPY --chown=node:node --from=build /usr/src/app/dist ./dist

# Start the server using the production build
CMD [ "node", "dist/main.js" ]