docker-compose setup node app - deep dive - node.js

Question

I am getting a npm ERR! enoent ENOENT: no such file or directory, open '/usr/src/app/package.json' error currently with the below docker setup or a error TS2307: Cannot find module 'Actions' or its corresponding type declarations- i think its a case that the paths are not found in tsconfig.json during the build or i am not COPYing the correct directory/volume as part of the Dockerfile. Have spent multiple days working through different path configs / setups, any help getting this to build would be greatly appreciated.
Would love to see a node / TS / docker / mysql project example if there are any in the community to share - have found it difficult to find opensource projects to compare this to for hints.
...
"paths": {
"Actions/*": [
"Actions/*"
],
}
docker-compose
version: '3.8'
services:
app:
image: app:latest
container_name: balanced-money-backend
build:
context: .
dockerfile: Dockerfile
# TODO investigate uid and gid, how does it get in - from a startup script? Think it needs to be added like user: $UID:$GID if my cmd calls a setup to id on host machine. Needs more investigation.
depends_on:
db:
condition: service_healthy
env_file:
- .env
restart: always
volumes:
- .:/var/www/
command: npm start
ports:
- $NODE_LOCAL_PORT:$NODE_DOCKER_PORT
environment:
- DB_HOST=$MYSQL_HOST
- DB_USERNAME=$MYSQL_USER
- DB_PORT=$MYSQL_DOCKER_PORT
- DB_PASSWORD=$MYSQL_PASSWORD
- DB_DATABASE=$MYSQL_DATABASE
db:
image: mysql:5.7
restart: always
container_name: balanced-money-database
environment:
- MYSQL_ROOT_PASSWORD=$MYSQL_ROOT_PASSWORD
- MYSQL_USER=$MYSQL_USER
- MYSQL_PASSWORD=$MYSQL_PASSWORD
- MYSQL_DATABASE=$MYSQL_DATABASE
ports:
- $MYSQL_LOCAL_PORT:$MYSQL_DOCKER_PORT
volumes:
- db:/var/lib/mysql
healthcheck: # mysql does not start immediatly, app needs to wait for mysql to start, having condition: service_healthy on app and a healthcheck makes sure db has started before app... i think.
test: mysqladmin ping -h 127.0.0.1 -u $$MYSQL_USER --password=$$MYSQL_PASSWORD
timeout: 20s
retries: 10
volumes:
db:
Dockerfile
############### Stage 1 - build the project
# use alpine version of node to keep the image size small as possible
FROM node:16-alpine AS build
# node docs recommend this
WORKDIR /usr/src/app
# docker caches per row as it builds, so copy those files which do not change often to the container first and following builds will not need copy as they are already cached by Docker.
COPY package*.json ./
COPY src tsconfig.json ./
RUN npm install
RUN npm run build
# TODO not sure about the stages - can i have a test / dev stage so test / dev is run in docker too.
############### Stage 2 - run the project
FROM build AS prod
EXPOSE 4000
# from stage 1, i.e. build take the code in the dist / package.json and copy to the container
COPY --from=build /usr/src/app/dist ./dist/
COPY --from=build /usr/src/app/package*.json ./
# npm ci will install exact versions from a package-lock file, and --production will only install dependencies, not dev dependencies.
RUN npm ci --production && npm cache clean --force
# make sure user is not root which could have security consequences.
USER node
CMD ["node", "dist/index.js"]
package.json scripts
"scripts": {
"build": "tsc",
"start": "node ./dist/index.js",
"node": "./dist/index.js",
"dev": "NODE_ENV=development DOTENV_CONFIG_PATH=.env.dev nodemon ts-node src/index.ts",
"format:prettier": "prettier --config .prettierrc 'src/**/*.ts' --write",
"lint": "eslint . --ext .ts",
"lint:fix": "eslint . --ext .ts --fix",
"test": "DOTENV_CONFIG_PATH=.env.test NODE_ENV=test jest --runInBand",
"test:coverage": "DOTENV_CONFIG_PATH=.env.test NODE_ENV=test jest --coverage",
},