More real-world prod config, separate lemmy config (#2487)

docker/prod/docker-compose.yml

@@ -1,23 +1,39 @@
-version: '2.2'
+version: "3.3"
+
+networks:
+  # communication to web and clients
+  lemmyexternalproxy:
+  # communication between lemmy services
+  lemmyinternal:
+    driver: bridge
+    internal: true
 
 services:
-  postgres:
-    image: postgres:14-alpine
-    environment:
-      - POSTGRES_USER=lemmy
-      - POSTGRES_PASSWORD=password
-      - POSTGRES_DB=lemmy
+  proxy:
+    image: nginx:1-alpine
+    networks:
+      - lemmyinternal
+      - lemmyexternalproxy
+    ports:
+      # only ports facing any connection from outside
+      - 80:80 
+      - 443:443
     volumes:
-      - ./volumes/postgres:/var/lib/postgresql/data
+      - ./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:
-    image: dessalines/lemmy:0.16.6
-    ports:
-      - "127.0.0.1:8536:8536"
-      - "127.0.0.1:6669:6669"
+    image: dessalines/lemmy:0.16.7
+    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
@@ -26,24 +42,44 @@ services:
       - pictrs
 
   lemmy-ui:
-    image: dessalines/lemmy-ui:0.16.6
-    ports:
-      - "127.0.0.1:1235:1234"
-    restart: always
+    image: dessalines/lemmy-ui:0.16.7
+    networks:
+      - lemmyinternal
     environment:
+      # this needs to match the hostname defined in the lemmy service
       - LEMMY_INTERNAL_HOST=lemmy:8536
-      - LEMMY_EXTERNAL_HOST=localhost:8536
+      # set the outside hostname here
+      - LEMMY_EXTERNAL_HOST=localhost:1236
       - LEMMY_HTTPS=true
     depends_on:
       - lemmy
+    restart: always
 
   pictrs:
     image: asonix/pictrs:0.3.1
-    ports: 
-      - "127.0.0.1:8537:8080"
-      - "127.0.0.1:6670:6669"
+    # this needs to match the pictrs url in lemmy.hjson
+    hostname: pictrs
+    # we can set options to pictrs like this, here we set max. image size and forced format for conversion
+    # entrypoint: /sbin/tini -- /usr/local/bin/pict-rs -p /mnt -m 4 --image-format webp
+    networks:
+      - lemmyinternal
+    environment:
+      - PICTRS__API_KEY=API_KEY
     user: 991:991
     volumes:
       - ./volumes/pictrs:/mnt
     restart: always
 
+  postgres:
+    image: postgres:14-alpine
+    # this needs to match the database host in lemmy.hson
+    hostname: postgres
+    networks:
+      - lemmyinternal
+    environment:
+      - POSTGRES_USER=lemmy
+      - POSTGRES_PASSWORD=password
+      - POSTGRES_DB=lemmy
+    volumes:
+      - ./volumes/postgres:/var/lib/postgresql/data
+    restart: always

docker/prod/lemmy.hjson

@@ -1,6 +1,7 @@
 {
   # 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
@@ -8,22 +9,22 @@
     # password for the admin user
     admin_password: "lemmylemmy"
     # name of the site (can be changed later)
-    site_name: "lemmy-test"
+    site_name: "mylemmyinstance"
   }
 
-  opentelemetry_url: "http://otel:4137"
-
   # the domain name of your instance (eg "lemmy.ml")
   hostname: "mydomain.ml"
   # 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.
+  tls_enabled: true
+
+  # pictrs host
+  pictrs_url: "http://pictrs:8080"
+
   # settings related to the postgresql database
-  pictrs_config: {
-    url: "http://pictrs:8080"
-    api_key: "API_KEY"
-  }
   database: {
     # name of the postgres database for lemmy
     database: "lemmy"
@@ -38,22 +39,5 @@
     # maximum number of active sql connections
     pool_size: 5
   }
-  slur_filter:
-    '''
-    (fag(g|got|tard)?\b|cock\s?sucker(s|ing)?|ni((g{2,}|q)+|[gq]{2,})[e3r]+(s|z)?|mudslime?s?|kikes?|\bspi(c|k)s?\b|\bchinks?|gooks?|bitch(es|ing|y)?|whor(es?|ing)|\btr(a|@)nn?(y|ies?)|\b(b|re|r)tard(ed)?s?)
-    '''
-#  # optional: email sending configuration
-#  email: {
-#    # hostname and port of the smtp server
-#    smtp_server: ""
-#    # login name for smtp server
-#    smtp_login: ""
-#    # password to login to the smtp server
-#    smtp_password: ""
-#    # address to send emails from, eg "noreply@your-instance.com"
-#    smtp_from_address: ""
-#    # whether or not smtp connections should use tls
-#    use_tls: true
-#  }
 }
 

docker/prod/nginx.conf

@@ -0,0 +1,152 @@
+# nginx example config
+# replace {{yourdomain}} and review the certbot/letsencrypt config
+worker_processes 1;
+events {
+    worker_connections 1024;
+}
+http {
+    limit_req_zone $binary_remote_addr zone={{yourdomain}}_ratelimit:10m rate=1r/s;
+
+    upstream lemmy {
+        # this needs to map to the lemmy (server) docker service hostname
+        server "lemmy:8536";
+    }
+    upstream lemmy-ui {
+        # this needs to map to the lemmy-ui docker service hostname
+        server "lemmy-ui:1234";
+    }
+
+    server {
+        # allow letsencrypt challenge
+        # redirect everything else to 443
+        listen 80;
+        listen [::]:80;
+        server_name {{yourdomain}};
+        location /.well-known/acme-challenge/ {
+            root /var/www/certbot;
+        }
+        location / {
+            return 301 https://$host$request_uri;
+        }
+    }
+
+    server {
+        listen 443 ssl http2;
+        listen [::]:443 ssl http2;
+        server_name {{yourdomain}};
+
+        ssl_certificate /etc/letsencrypt/live/{{yourdomain}}/fullchain.pem;
+        ssl_certificate_key /etc/letsencrypt/live/{{yourdomain}}/privkey.pem;
+
+        # Various TLS hardening settings
+        # https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html
+        ssl_protocols TLSv1.2 TLSv1.3;
+        ssl_prefer_server_ciphers on;
+        ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
+        ssl_session_timeout  10m;
+        ssl_session_cache shared:SSL:10m;
+        ssl_session_tickets on;
+        ssl_stapling on;
+        ssl_stapling_verify on;
+
+        # Hide nginx version
+        server_tokens off;
+
+        # Enable compression for JS/CSS/HTML bundle, for improved client load times.
+        # It might be nice to compress JSON, but leaving that out to protect against potential
+        # compression+encryption information leak attacks like BREACH.
+        gzip on;
+        gzip_types text/css application/javascript image/svg+xml;
+        gzip_vary on;
+
+        # Only connect to this site via HTTPS for the two years
+        add_header Strict-Transport-Security "max-age=63072000";
+
+        # Various content security headers
+        add_header Referrer-Policy "same-origin";
+        add_header X-Content-Type-Options "nosniff";
+        add_header X-Frame-Options "DENY";
+        add_header X-XSS-Protection "1; mode=block";
+
+        # Upload limit for pictrs
+        client_max_body_size 20M;
+
+        # frontend
+        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|feeds|nodeinfo|.well-known) {
+            proxy_pass "http://lemmy";
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+
+            # Rate limit
+            limit_req zone={{yourdomain}}_ratelimit burst=30 nodelay;
+
+            # Add IP forwarding headers
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+
+        # pictrs only - for adding browser cache control.
+        location ~ ^/(pictrs) {
+            # allow browser cache, images never update, we can apply long term cache
+            expires 120d;
+            add_header Pragma "public";
+            add_header Cache-Control "public";
+
+            proxy_pass "http://lemmy";
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+
+            # Rate limit
+            limit_req zone={{yourdomain}}_ratelimit burst=30 nodelay;
+
+            # Add IP forwarding headers
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+
+        # Redirect pictshare images to pictrs
+        location ~ /pictshare/(.*)$ {
+            return 301 /pictrs/image/$1;
+        }
+    }
+
+    # Anonymize IP addresses
+    # https://www.supertechcrew.com/anonymizing-logs-nginx-apache/
+    map $remote_addr $remote_addr_anon {
+        ~(?P<ip>\d+\.\d+\.\d+)\.    $ip.0;
+        ~(?P<ip>[^:]+:[^:]+):       $ip::;
+        127.0.0.1                   $remote_addr;
+        ::1                         $remote_addr;
+        default                     0.0.0.0;
+    }
+    access_log /var/log/nginx/access.log combined;
+}