dockerfile

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

FROM node:18 As development

RUN apt-get update && apt-get install -y openssl

# Create app directory
WORKDIR /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  package*.json ./
COPY prisma ./prisma/

# Install app dependencies using the `npm install', prisma has a post install hook
RUN npm install

# Bundle app source
COPY . .

# Use the node user from the image (instead of the root user)
# USER node

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

FROM node:18-alpine As build

WORKDIR /app

COPY 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 --from=development /app/node_modules ./node_modules
COPY --from=development /app/prisma ./prisma

COPY . .

# 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 node:18-alpine As production

# Copy the bundled code from the build stage to the production image
COPY --from=build /app/node_modules ./node_modules
COPY --from=build /app/dist ./dist
COPY --from=build /app/prisma ./prisma

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