update for docker-compose setup exmaples

[ccppoo]

Is your feature request related to a problem? Please describe.

update for documentation's sample docker-compose.yaml

Describe the solution you'd like

example docker-compose.yaml script from documentation

uses mounting volume(folder) for database and npm folders.

but it's error prone because your sample script is using relative path ./data

that **./data** could cause error depending on where the user run docker-compose up -f /path/to/docker-compose.yml

if ./data already existed error bellow could happen (that most of the people asks at issue tab)

error example 1

ER_ACCESS_DENIED_ERROR: Access denied for user 'npm'@'172.21.0.3' (using password: YES)

error example 2

error that shows bad gateway first login such as this issue

so solution

no one mentioned this issue because he solved his own problem and closed the issue

#1832

I saw other solutions at stackoverflow or reddit but

this was the most simple and safe from other side affect (which could be caused by editing config files)

it just adds docker volume (in my case external - so it could be safe when redeployed)

docker-compose.yaml I used and worked

version: "3"
services:
  app:
    image: 'jc21/nginx-proxy-manager:latest'
    restart: unless-stopped
    ports:
      - '80:80' # Public HTTP Port
      - '443:443' # Public HTTPS Port
      - '81:81' # Admin Web Port
    environment:
      DB_MYSQL_HOST: "db"
      DB_MYSQL_PORT: 3306
      DB_MYSQL_USER: "npm"
      DB_MYSQL_PASSWORD: "npm"
      DB_MYSQL_NAME: "npm"
      DISABLE_IPV6: 'true'
    volumes:
      - npm_system:/data #### change here ####
      - ./letsencrypt:/etc/letsencrypt
    depends_on:
      - db

  db:
    image: mysql
    command: --default-authentication-plugin=mysql_native_password
    restart: unless-stopped
    environment:
      MYSQL_ROOT_PASSWORD: 'npm'
      MYSQL_DATABASE: 'npm'
      MYSQL_USER: 'npm'
      MYSQL_PASSWORD: 'npm'
    volumes:
      - npm_system_db:/var/lib/mysql #### change here ####
  
#### change here ####
volumes:
  npm_system_db:
    external: true
  npm_system:
    external: true

just adding external docker volume

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Issue was closed due to inactivity.