Use canonical links to external services.

Signed-off-by: Kaloyan Nikolov <tzerber@gmail.com>

.examples/docker-compose/insecure/mariadb/apache/compose.yaml

@@ -1,8 +1,9 @@
 services:
   # Note: MariaDB is an external service. You can find more information about the configuration here:
-  # https://docs.linuxserver.io/images/docker-mariadb/#environment-variables-e
+  # https://hub.docker.com/_/mariadb
   db:
-    image: mariadb:10.11
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: mariadb:lts
     command: --transaction-isolation=READ-COMMITTED
     restart: always
     volumes:
@@ -15,7 +16,7 @@ services:
       - db.env
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always

.examples/docker-compose/insecure/mariadb/fpm/compose.yaml

@@ -1,8 +1,9 @@
 services:
   # Note: MariaDB is an external service. You can find more information about the configuration here:
-  # https://docs.linuxserver.io/images/docker-mariadb/#environment-variables-e
+  # https://hub.docker.com/_/mariadb
   db:
-    image: mariadb:10.11
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: mariadb:lts
     command: --transaction-isolation=READ-COMMITTED
     restart: always
     volumes:
@@ -15,7 +16,7 @@ services:
       - db.env
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always
@@ -38,12 +39,13 @@ services:
   # Note: Nginx is an external service. You can find more information about the configuration here:
   # https://hub.docker.com/_/nginx/
   web:
-    image: nginx:alpine
+    image: nginx:alpine-slim
     restart: always
     ports:
       - 127.0.0.1:8080:80
     volumes:
-      - ./web/nginx.conf:/etc/nginx/nginx.conf:ro  # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      - ./web/nginx.conf:/etc/nginx/nginx.conf:ro  
       # NOTE: The `volumes` included below should match those of the `app` container (unless you know what you're doing)
       - nextcloud:/var/www/html:z,ro
     depends_on:

.examples/docker-compose/insecure/postgres/apache/compose.yaml

@@ -1,8 +1,9 @@
 services:
   # Note: PostgreSQL is an external service. You can find more information about the configuration here:
-  # https://github.com/docker-library/docs/blob/master/postgres/README.md
+  # https://hub.docker.com/_/postgres
   db:
-    image: postgres:16-alpine
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: postgres:alpine
     restart: always
     volumes:
       - db:/var/lib/postgresql/data:Z
@@ -10,7 +11,7 @@ services:
       - db.env
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always

.examples/docker-compose/insecure/postgres/fpm/compose.yaml

@@ -1,8 +1,9 @@
 services:
   # Note: PostgreSQL is an external service. You can find more information about the configuration here:
-  # https://github.com/docker-library/docs/blob/master/postgres/README.md
+  # https://hub.docker.com/_/postgres
   db:
-    image: postgres:16-alpine
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: postgres:alpine
     restart: always
     volumes:
       - db:/var/lib/postgresql/data:Z
@@ -10,7 +11,7 @@ services:
       - db.env
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always
@@ -33,12 +34,13 @@ services:
   # Note: Nginx is an external service. You can find more information about the configuration here:
   # https://hub.docker.com/_/nginx/
   web:
-    image: nginx:alpine
+    image: nginx:alpine-slim
     restart: always
     ports:
       - 127.0.0.1:8080:80
     volumes:
-      - ./web/nginx.conf:/etc/nginx/nginx.conf:ro  # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      - ./web/nginx.conf:/etc/nginx/nginx.conf:ro  
       # NOTE: The `volumes` included below should match those of the `app` container (unless you know what you're doing)
       - nextcloud:/var/www/html:z,ro
     depends_on:

.examples/docker-compose/with-nginx-proxy/mariadb/apache/compose.yaml

@@ -1,8 +1,9 @@
 services:
   # Note: MariaDB is an external service. You can find more information about the configuration here:
-  # https://docs.linuxserver.io/images/docker-mariadb/#environment-variables-e
+  # https://hub.docker.com/_/mariadb
   db:
-    image: mariadb:10.11
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: mariadb:lts
     command: --transaction-isolation=READ-COMMITTED
     restart: always
     volumes:
@@ -15,7 +16,7 @@ services:
       - db.env
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always
@@ -74,7 +75,7 @@ services:
       - proxy-tier
 
   # Note: Letsencrypt companion is an external service. You can find more information about the configuration here:
-  # https://github.com/nginx-proxy/acme-companion/tree/main/docs#readme
+  # https://hub.docker.com/r/nginxproxy/acme-companion
   letsencrypt-companion:
     image: nginxproxy/acme-companion
     restart: always

.examples/docker-compose/with-nginx-proxy/mariadb/fpm/compose.yaml

@@ -1,8 +1,9 @@
 services:
   # Note: MariaDB is an external service. You can find more information about the configuration here:
-  # https://docs.linuxserver.io/images/docker-mariadb/#environment-variables-e
+  # https://hub.docker.com/_/mariadb
   db:
-    image: mariadb:10.11
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: mariadb:lts
     command: --transaction-isolation=READ-COMMITTED
     restart: always
     volumes:
@@ -15,7 +16,7 @@ services:
       - db.env
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always
@@ -39,10 +40,11 @@ services:
   # Note: Nginx is an external service. You can find more information about the configuration here:
   # https://hub.docker.com/_/nginx/
   web:
-    image: nginx:alpine
+    image: nginx:alpine-slim
     restart: always
     volumes:
-      - ./web/nginx.conf:/etc/nginx/nginx.conf:ro  # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      - ./web/nginx.conf:/etc/nginx/nginx.conf:ro  
       # NOTE: The `volumes` included below should match those of the `app` container (unless you know what you're doing)
       - nextcloud:/var/www/html:z,ro
     environment:
@@ -86,7 +88,7 @@ services:
       - proxy-tier
 
   # Note: Letsencrypt companion is an external service. You can find more information about the configuration here:
-  # https://github.com/nginx-proxy/acme-companion/tree/main/docs#readme
+  # https://hub.docker.com/r/nginxproxy/acme-companion
   letsencrypt-companion:
     image: nginxproxy/acme-companion
     restart: always

.examples/docker-compose/with-nginx-proxy/postgres/apache/compose.yaml

@@ -1,8 +1,9 @@
 services:
   # Note: PostgreSQL is an external service. You can find more information about the configuration here:
-  # https://github.com/docker-library/docs/blob/master/postgres/README.md
+  # https://hub.docker.com/_/postgres
   db:
-    image: postgres:16-alpine
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: postgres:alpine
     restart: always
     volumes:
       - db:/var/lib/postgresql/data:Z
@@ -10,7 +11,7 @@ services:
       - db.env
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always
@@ -68,7 +69,7 @@ services:
       - proxy-tier
 
   # Note: Letsencrypt companion is an external service. You can find more information about the configuration here:
-  # https://github.com/nginx-proxy/acme-companion/tree/main/docs#readme
+  # https://hub.docker.com/r/nginxproxy/acme-companion
   letsencrypt-companion:
     image: nginxproxy/acme-companion
     restart: always

.examples/docker-compose/with-nginx-proxy/postgres/fpm/compose.yaml

@@ -1,8 +1,9 @@
 services:
   # Note: PostgreSQL is an external service. You can find more information about the configuration here:
-  # https://github.com/docker-library/docs/blob/master/postgres/README.md
+  # https://hub.docker.com/_/postgres
   db:
-    image: postgres:16-alpine
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: postgres:alpine
     restart: always
     volumes:
       - db:/var/lib/postgresql/data:Z
@@ -10,7 +11,7 @@ services:
       - db.env
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always
@@ -34,10 +35,11 @@ services:
   # Note: Nginx is an external service. You can find more information about the configuration here:
   # https://hub.docker.com/_/nginx/
   web:
-    image: nginx:alpine
+    image: nginx:alpine-slim
     restart: always
     volumes:
-      - ./web/nginx.conf:/etc/nginx/nginx.conf:ro  # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      - ./web/nginx.conf:/etc/nginx/nginx.conf:ro
       # NOTE: The `volumes` included below should match those of the `app` container (unless you know what you're doing)
       - nextcloud:/var/www/html:z,ro
     environment:
@@ -81,7 +83,7 @@ services:
       - proxy-tier
 
   # Note: Letsencrypt companion is an external service. You can find more information about the configuration here:
-  # https://github.com/nginx-proxy/acme-companion/tree/main/docs#readme
+  # https://hub.docker.com/r/nginxproxy/acme-companion
   letsencrypt-companion:
     image: nginxproxy/acme-companion
     restart: always

README.md

@@ -82,7 +82,7 @@ Database:
 ```console
 $ docker run -d \
 -v db:/var/lib/mysql \
-mariadb:10.11
+mariadb:lts
 ```
 
 ### Additional volumes
@@ -404,9 +404,10 @@ Make sure to pass in values for `MYSQL_ROOT_PASSWORD` and `MYSQL_PASSWORD` varia
 ```yaml
 services:
   # Note: MariaDB is external service. You can find more information about the configuration here:
-  # https://docs.linuxserver.io/images/docker-mariadb/#environment-variables-e
+  # https://hub.docker.com/_/mariadb
   db:
-    image: mariadb:10.11
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: mariadb:lts
     restart: always
     command: --transaction-isolation=READ-COMMITTED
     volumes:
@@ -418,7 +419,7 @@ services:
       - MYSQL_USER=nextcloud
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always
@@ -456,9 +457,10 @@ Make sure to pass in values for `MYSQL_ROOT_PASSWORD` and `MYSQL_PASSWORD` varia
 ```yaml
 services:
   # Note: MariaDB is an external service. You can find more information about the configuration here:
-  # https://docs.linuxserver.io/images/docker-mariadb/#environment-variables-e
+  # https://hub.docker.com/_/mariadb
   db:
-    image: mariadb:10.11
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: mariadb:lts
     restart: always
     command: --transaction-isolation=READ-COMMITTED
     volumes:
@@ -470,7 +472,7 @@ services:
       - MYSQL_USER=nextcloud
 
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always
@@ -492,14 +494,15 @@ services:
   # Note: Nginx is an external service. You can find more information about the configuration here:
   # https://hub.docker.com/_/nginx/
   web:
-    image: nginx:alpine
+    image: nginx:alpine-slim
     restart: always
     ports:
       - 8080:80
     depends_on:
       - app
     volumes:
-      - ./nginx.conf:/etc/nginx/nginx.conf:ro # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
+      - ./nginx.conf:/etc/nginx/nginx.conf:ro 
     volumes_from:
       - app
 
@@ -525,9 +528,10 @@ Example:
 ```yaml
 services:
   # Note: PostgreSQL is external service. You can find more information about the configuration here:
-  # https://github.com/docker-library/docs/blob/master/postgres/README.md
+  # https://hub.docker.com/_/postgres
   db:
-    image: postgres:16-alpine
+    # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
+    image: postgres:alpine
     restart: always
     volumes:
       - db:/var/lib/postgresql/data
@@ -540,7 +544,7 @@ services:
       - postgres_password
       - postgres_user
   # Note: Redis is an external service. You can find more information about the configuration here:
-  # https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/docker/#configuration
+  # https://hub.docker.com/_/redis
   redis:
     image: redis:alpine
     restart: always