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Docker
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###################
# BUILD FOR LOCAL DEVELOPMENT
###################
FROM docker.io/node:18-alpine3.16 As development
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# Create app directory
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 ./
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# Copy prisma (needed for prisma error types)
COPY --chown=node:node ./prisma prisma
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# Install app dependencies using the `npm ci` command instead of `npm install`
RUN npm ci
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RUN npx prisma generate
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# Bundle app source
COPY --chown=node:node . .
# Use the node user from the image (instead of the root user)
USER node
###################
# BUILD FOR PRODUCTION
###################
FROM docker.io/node:18-alpine3.16 As build
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WORKDIR /usr/src/app
COPY --chown=node:node package*.json ./
# In order to run `npm run build` we need access to the Nest CLI.
# The Nest CLI 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 into this build image.
COPY --chown=node:node --from=development /usr/src/app/node_modules ./node_modules
COPY --chown=node:node . .
# Copy prisma (needed for migrations)
COPY --chown=node:node ./prisma prisma
# 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.
# Passing in --omit=dev ensures that only the production dependencies are installed.
# This ensures that the node_modules directory is as optimized as possible.
RUN npm ci --omit=dev && npm cache clean --force
USER node
###################
# PRODUCTION
###################
FROM docker.io/node:18-alpine3.16 As production
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# Copy package.json to be able to execute migration command
COPY --chown=node:node package*.json ./
# 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/prisma ./prisma
COPY --chown=node:node --from=build /usr/src/app/dist ./dist
# Start the server using the production build
CMD [ "node", "dist/main.js" ]