Lemmy Support

version: "3.3"
# JatNote = Note from Jattatak for working YML at this time (Jun8,2023)
networks:
  # communication to web and clients
  lemmyexternalproxy:
  # communication between lemmy services
  lemmyinternal:
    driver: bridge
    #JatNote: The Internal mode for this network is in the official doc, but is what broke my setup
    # I left it out to fix it. I advise the same.
#    internal: true

services:
  proxy:
    image: nginx:1-alpine
    networks:
      - lemmyinternal
      - lemmyexternalproxy
    ports:
      # only ports facing any connection from outside
      # JatNote: Ports mapped to nonsense to prevent colision with NGINX Proxy Manager
      - 680:80
      - 6443:443
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro
      # setup your certbot and letsencrypt config 
      - ./certbot:/var/www/certbot
      - ./letsencrypt:/etc/letsencrypt/live
    restart: always
    depends_on:
      - pictrs
      - lemmy-ui

  lemmy:
  #JatNote: I am running on an ARM Ubuntu Virtual Server. Therefore, this is my image. I suggest using matching lemmy/lemmy-ui versions.
    image: dessalines/lemmy:0.17.3-linux-arm64
    hostname: lemmy
    networks:
      - lemmyinternal
    restart: always
    environment:
      - RUST_LOG="warn,lemmy_server=info,lemmy_api=info,lemmy_api_common=info,lemmy_api_crud=info,lemmy_apub=info,lemmy_db_schema=info,lemmy_db_views=info,lemmy_db_views_actor=info,lemmy_db_views_moderator=info,lemmy_routes=info,lemmy_utils=info,lemmy_websocket=info"
    volumes:
      - ./lemmy.hjson:/config/config.hjson
    depends_on:
      - postgres
      - pictrs

  lemmy-ui:
  #JatNote: Again, ARM based image
    image: dessalines/lemmy-ui:0.17.3-linux-arm64
    hostname: lemmy-ui
    networks:
      - lemmyinternal
    environment:
      # this needs to match the hostname defined in the lemmy service
      - LEMMY_UI_LEMMY_INTERNAL_HOST=lemmy:8536
      # set the outside hostname here
      - LEMMY_UI_LEMMY_EXTERNAL_HOST=lemmy.bulwarkob.com:1236
      - LEMMY_HTTPS=true
    depends_on:
      - lemmy
    restart: always

  pictrs:
    image: asonix/pictrs
    # this needs to match the pictrs url in lemmy.hjson
    hostname: pictrs
    networks:
      - lemmyinternal
    environment:
      - PICTRS__API_KEY=API_KEY
    user: 991:991
    volumes:
      - ./volumes/pictrs:/mnt
    restart: always

  postgres:
    image: postgres:15-alpine
    # this needs to match the database host in lemmy.hson
    hostname: postgres
    networks:
      - lemmyinternal
    environment:
      - POSTGRES_USER=AUser
      - POSTGRES_PASSWORD=APassword
      - POSTGRES_DB=lemmy
    volumes:
      - ./volumes/postgres:/var/lib/postgresql/data
    restart: always

{
  # for more info about the config, check out the documentation
  # https://join-lemmy.org/docs/en/administration/configuration.html
  # only few config options are covered in this example config

  setup: {
    # username for the admin user
    admin_username: "AUser"
    # password for the admin user
    admin_password: "APassword"
    # name of the site (can be changed later)
    site_name: "Bulwark of Boredom"
  }

  opentelemetry_url: "http://otel:4317"

  # the domain name of your instance (eg "lemmy.ml")
  hostname: "lemmy.bulwarkob.com"
  # address where lemmy should listen for incoming requests
  bind: "0.0.0.0"
  # port where lemmy should listen for incoming requests
  port: 8536
  # Whether the site is available over TLS. Needs to be true for federation to work.
  # JatNote: I was advised that this is not necessary. It does work without it.
#  tls_enabled: true

  # pictrs host
  pictrs: {
    url: "http://pictrs:8080/"
  # api_key: "API_KEY"
  }

  # settings related to the postgresql database
  database: {
    # name of the postgres database for lemmy
    database: "lemmy"
    # username to connect to postgres
    user: "aUser"
    # password to connect to postgres
    password: "aPassword"
    # host where postgres is running
    host: "postgres"
    # port where postgres can be accessed
    port: 5432
    # maximum number of active sql connections
    pool_size: 5
  }
}

worker_processes 1;
events {
    worker_connections 1024;
}
http {
    upstream lemmy {
        # this needs to map to the lemmy (server) docker service hostname
        server "lemmy:8536";
    }
    upstream lemmy-ui {
        # this needs to map to the lemmy-ui docker service hostname
        server "lemmy-ui:1234";
    }

    server {
        # this is the port inside docker, not the public one yet
        listen 80;
        # change if needed, this is facing the public web
        server_name localhost;
        server_tokens off;

        gzip on;
        gzip_types text/css application/javascript image/svg+xml;
        gzip_vary on;

        # Upload limit, relevant for pictrs
        client_max_body_size 20M;

        add_header X-Frame-Options SAMEORIGIN;
        add_header X-Content-Type-Options nosniff;
        add_header X-XSS-Protection "1; mode=block";

        # frontend general requests
        location / {
            # distinguish between ui requests and backend
            # don't change lemmy-ui or lemmy here, they refer to the upstream definitions on top
            set $proxpass "http://lemmy-ui";

            if ($http_accept = "application/activity+json") {
              set $proxpass "http://lemmy";
            }
            if ($http_accept = "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"") {
              set $proxpass "http://lemmy";
            }
            if ($request_method = POST) {
              set $proxpass "http://lemmy";
            }
            proxy_pass $proxpass;

            rewrite ^(.+)/+$ $1 permanent;
            # Send actual client IP upstream
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }

        # backend
        location ~ ^/(api|pictrs|feeds|nodeinfo|.well-known) {
            proxy_pass "http://lemmy";
            # proxy common stuff
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";

            # Send actual client IP upstream
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }
    }
}