A docker file in order to build node application with multi stage

readme.md

Node Application

Work with Multi Stage Dockerfile

Folder

• backend contains the backend source code
• frontend contains the frontend source code

Dockerfile

#
# Multipart dockerfile for build the application and the delivery docker image
#
FROM node:12-alpine AS builder

WORKDIR /builder

RUN \
  apk add --update tree openssl && \
  mkdir -p /builder/frontend/src /builder/app /builder/backend/src

# Copy Frontend
COPY frontend/*.json /builder/frontend/
COPY frontend/src /builder/frontend/src

# Copy Backend
COPY backend/*.json /builder/backend/
COPY backend/src/ /builder/backend/src/

# RUN \
#   tree /builder/backend

# Build Frontend
RUN \
  cd /builder/frontend && \
  npm ci && \
  npm run build:prod && \
  mv /builder/frontend/dist/xev /builder/app/html && \
  echo "> Info: Fontend is built success... Path: \"/builder/app/html\""


# Build Backend
RUN \
  cd /builder/backend && \
  npm ci && \
  npm run build && \
  mv /builder/backend/dist /builder/app/lib && \
  cp /builder/backend/*.json /builder/app/ && \
  mv /builder/backend/node_modules /builder/app/node_modules && \
  echo "> Info: Backend is built successful.. Path: \"/builder/app\""

# Generates public / private RSA keys
RUN \
  mkdir /builder/app/etc && \
  # generates the private key with 2048 bits
  openssl genrsa -out /builder/app/etc/prod-private.pem 2048 && \
  # generates the public key
  openssl rsa -in /builder/app/etc/prod-private.pem -pubout -out /builder/app/etc/prod-public.pem && \
  # View the folder content
  tree -I node_modules /builder/app && \
  echo "Info: Build is finish... Path: \"/builder/app\""



FROM node:12-alpine AS delivery

WORKDIR /app

COPY docker/start.sh /app
COPY --from=builder /builder/app /app

RUN \
  chmod +x /app/start.sh

EXPOSE $PORT

CMD ["/app/start.sh"]

startup.sh

#!/usr/bin/env sh

# checked the required Envs
if [[ -z "${PORT}" ]]; then
  echo "> Error: Server Port is required"
  exit 1
fi


if [[ -z "${DB_HOST}" ]]; then
  echo "> Error: Database Host is required"
  exit 1
fi

if [[ -z "${DB_PORT}" ]]; then
  echo "> Error: Database Port is required"
  exit 1
fi

if [[ -z "${DB_USER}" ]]; then
  echo "> Error: Database User is required"
  exit 1
fi

if [[ -z "${DB_PASSWORD}" ]]; then
  echo "> Error: Database User Password is required"
  exit 1
fi

if [[ -z "${DB_DATABASE}" ]]; then
  echo "> Error: Database Name is required"
  exit 1
fi

if [[ -z "${DIGEST_SECRET}" ]]; then
  echo "> Error: Digest Secrets is required"
  exit 1
fi

export AUTH_PRIVATE_URL=/app/etc/prod-private.pem
export AUTH_PUBLIC_URL=/app/etc/prod-public.pem

#
# application stage is always "prod" in the AWS environment
#
export APP_STAGE=prod


# Change working directory
cd /app

# Node
node lib/main.js