Dockerfile

## Development stage
FROM amd64/node:20.10.0-alpine As development

RUN mkdir -p /usr/src/app/node_modules && chown -R node:node /usr/src/app
WORKDIR /usr/src/app
# Copy application dependency manifests to the container image.
# A wildcard is used to ensure copying both package.json AND package-lock.json (when available).
# Copying this first prevents re-running npm install on every code change.
COPY --chown=node:node package*.json ./

USER node

RUN npm ci

COPY --chown=node:node . .

## Build stage
FROM amd64/node:20.10.0-alpine As build

RUN mkdir -p /usr/src/app/node_modules && chown -R node:node /usr/src/app
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 . .

USER node

RUN npm run build

RUN npm ci --omit=dev && npm cache clean --force


## Production stage
FROM amd64/node:20.10.0-alpine As production

RUN mkdir -p /usr/src/app/node_modules && chown -R node:node /usr/src/app
WORKDIR /usr/src/app

# 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

USER node

CMD ["node", "dist/src/main.js"]