Node Dockerfile

# Image to use as a base for the others.
FROM node:current-alpine3.19 AS base



# Image to actually build the output.
FROM base AS builder

WORKDIR /app

COPY package.json package-lock.json ./
RUN npm ci

COPY . .
RUN npm run build



# Image to build the runtime, so that the final output doesn't have the NPM caches.
FROM base AS runtime-builder

WORKDIR /app

COPY package.json package-lock.json ./
RUN npm ci --omit=dev

COPY --from=builder /app/target/build /app/target



# Actual final runtime.
FROM base AS runtime
WORKDIR /app
COPY --from=runtime-builder /app ./

CMD ["node", "./target/src"]

ENV NODE_ENV=production
ENV PORT=8000

HEALTHCHECK --interval=10s --timeout=5s --start-period=15s \
  CMD wget --no-verbose --tries=1 localhost:$PORT/debug/ping || exit 1%