Docker how to run node js - php

Question

This is my docker-compose.yml
version: '3.9'
networks:
bedrock:
services:
web:
container_name: kawa-web
image: nginx:stable-alpine
volumes:
- ./:/var/www/html:delegated
- ./docker/nginx/nginx.conf:/etc/nginx/conf.d/default.conf
ports:
- 8080:80
depends_on:
- php
- mysql
networks:
- bedrock
php:
container_name: kawa-php
image: nanoninja/php-fpm:8.0
volumes:
- ./:/var/www/html
- ./docker/config/php.ini:/usr/local/etc/php/conf.d/php.ini
ports:
- 9000:9000
networks:
- bedrock
mysql:
container_name: kawa-db
image: mysql:8
volumes:
- ./docker/db:/var/lib/mysql:delegated
ports:
- 3306:3306
command: --default-authentication-plugin=mysql_native_password
environment:
- MYSQL_ROOT_PASSWORD=${DB_PASSWORD}
networks:
- bedrock
node:
container_name: kawa-node
build:
context: .
dockerfile: node.dockerfile
volumes:
- ./:/var/www/html
networks:
- bedrock
Content of node.dockerfile
FROM node:18-alpine
WORKDIR /var/www/html
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 8080
When I run docker compose up -d it shows
failed to solve: error from sender: open /path/to/project/docker/db/#innodb_temp: permission denied
How can I fix this? Or any another way to run nodejs inside PHP container maybe?

Answer 1

When your Compose setup has:
services:
mysql:
volumes:
- ./docker/db:/var/lib/mysql:delegated
node:
build:
context: .
The MySQL data directory is in the ./docker/db directory. That's inside the . build-context directory of the Node application, so docker-compose build among other things sends the entire MySQL data to itself, and if the database is currently running, you could get lock or permission problems like this.
The best approach to work around this is to split your application into separate directories, and have each language component only build its own subdirectory.
$ ls -1F
data/
docker-compose.yml
js/
php/
static/
$ ls -1F js
Dockerfile
index.js
node_modules/
package.json
package-lock.json
# docker-compose.yml
version: '3.8'
services:
...
mysql:
image: mysql:8
volumes:
- ./data/db:/var/lib/mysql:delegated
ports:
- 3306:3306
command: --default-authentication-plugin=mysql_native_password
environment:
- MYSQL_ROOT_PASSWORD=${DB_PASSWORD}
node:
build: ./js
(Note that I've used the short syntax for build: to use the default Dockerfile in the context directory; I've removed unnecessary container_name: and networks: options, using the Compose-provided default network; and I've removed the volumes: that overwrite the image's content. Make sure ./js/Dockerfile has a CMD instruction that says how to start the container.)