diff --git a/configuration/ids.nix b/configuration/ids.nix
index 5488ff0..895b976 100644
--- a/configuration/ids.nix
+++ b/configuration/ids.nix
@@ -4,12 +4,6 @@
   ids.uids = {
     # System user ids start at 400 (see nixos/modules/programs/shadow.nix)
     webserver = 400;
-    minecraft = 401;
     # The limit is 999
   };
-
-  ids.gids = {
-    webserver = 400;
-    minecraft = 401;
-  };
 }
diff --git a/configuration/services/configs/nginx-nextcloud.conf b/configuration/services/configs/nginx-nextcloud.conf
index 7c6ad78..3eb1193 100644
--- a/configuration/services/configs/nginx-nextcloud.conf
+++ b/configuration/services/configs/nginx-nextcloud.conf
@@ -24,31 +24,37 @@ http {
 
     keepalive_timeout  65;
 
+    set_real_ip_from  10.0.0.0/8;
+    set_real_ip_from  172.16.0.0/12;
+    set_real_ip_from  192.168.0.0/16;
+    real_ip_header    X-Real-IP;
+
     #gzip  on;
 
     upstream php-handler {
-        server localhost:9000;
+        server nextcloud-nextcloud:9000;
     }
 
     server {
         listen 80;
 
-        # HSTS settings
+        # Add headers to serve security related headers
+        # Before enabling Strict-Transport-Security headers please read into this
+        # topic first.
+        #add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;" always;
+        #
         # WARNING: Only add the preload option once you read about
         # the consequences in https://hstspreload.org/. This option
         # will add the domain to a hardcoded list that is shipped
         # in all major browsers and getting removed from this list
         # could take several months.
-        #add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;" always;
-
-        # HTTP response headers borrowed from Nextcloud `.htaccess`
-        add_header Referrer-Policy                      "no-referrer"   always;
-        add_header X-Content-Type-Options               "nosniff"       always;
-        add_header X-Download-Options                   "noopen"        always;
-        add_header X-Frame-Options                      "SAMEORIGIN"    always;
-        add_header X-Permitted-Cross-Domain-Policies    "none"          always;
-        add_header X-Robots-Tag                         "none"          always;
-        add_header X-XSS-Protection                     "1; mode=block" always;
+        add_header Referrer-Policy "no-referrer" always;
+        add_header X-Content-Type-Options "nosniff" always;
+        add_header X-Download-Options "noopen" always;
+        add_header X-Frame-Options "SAMEORIGIN" always;
+        add_header X-Permitted-Cross-Domain-Policies "none" always;
+        add_header X-Robots-Tag "none" always;
+        add_header X-XSS-Protection "1; mode=block" always;
 
         # Remove X-Powered-By, which is an information leak
         fastcgi_hide_header X-Powered-By;
@@ -56,48 +62,27 @@ http {
         # Path to the root of your installation
         root /var/www/html;
 
-        # Specify how to handle directories -- specifying `/index.php$request_uri`
-        # here as the fallback means that Nginx always exhibits the desired behaviour
-        # when a client requests a path that corresponds to a directory that exists
-        # on the server. In particular, if that directory contains an index.php file,
-        # that file is correctly served; if it doesn't, then the request is passed to
-        # the front-end controller. This consistent behaviour means that we don't need
-        # to specify custom rules for certain paths (e.g. images and other assets,
-        # `/updater`, `/ocm-provider`, `/ocs-provider`), and thus
-        # `try_files $uri $uri/ /index.php$request_uri`
-        # always provides the desired behaviour.
-        index index.php index.html /index.php$request_uri;
-
-        # Rule borrowed from `.htaccess` to handle Microsoft DAV clients
-        location = / {
-            if ( $http_user_agent ~ ^DavClnt ) {
-                return 302 /remote.php/webdav/$is_args$args;
-            }
-        }
-
         location = /robots.txt {
             allow all;
             log_not_found off;
             access_log off;
         }
 
-        # Make a regex exception for `/.well-known` so that clients can still
-        # access it despite the existence of the regex rule
-        # `location ~ /(\.|autotest|...)` which would otherwise handle requests
-        # for `/.well-known`.
-        location ^~ /.well-known {
-            # The rules in this block are an adaptation of the rules
-            # in `.htaccess` that concern `/.well-known`.
+        # The following 2 rules are only needed for the user_webfinger app.
+        # Uncomment it if you're planning to use this app.
+        #rewrite ^/.well-known/host-meta /public.php?service=host-meta last;
+        #rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json last;
 
-            location = /.well-known/carddav { return 301 /remote.php/dav/; }
-            location = /.well-known/caldav  { return 301 /remote.php/dav/; }
+        # The following rule is only needed for the Social app.
+        # Uncomment it if you're planning to use this app.
+        #rewrite ^/.well-known/webfinger /public.php?service=webfinger last;
 
-            location /.well-known/acme-challenge    { try_files $uri $uri/ =404; }
-            location /.well-known/pki-validation    { try_files $uri $uri/ =404; }
+        location = /.well-known/carddav {
+            return 301 $scheme://$host:$server_port/remote.php/dav;
+        }
 
-            # Let Nextcloud's API for `/.well-known` URIs handle all other
-            # requests by passing them to the front-end controller.
-            return 301 /index.php$request_uri;
+        location = /.well-known/caldav {
+            return 301 $scheme://$host:$server_port/remote.php/dav;
         }
 
         # set max upload size
@@ -112,56 +97,77 @@ http {
         gzip_proxied expired no-cache no-store private no_last_modified no_etag auth;
         gzip_types application/atom+xml application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy;
 
-        # Pagespeed is not supported by Nextcloud, so if your server is built
-        # with the `ngx_pagespeed` module, uncomment this line to disable it.
+        # Uncomment if your server is build with the ngx_pagespeed module
+        # This module is currently not supported.
         #pagespeed off;
 
-        # Rules borrowed from `.htaccess` to hide certain paths from clients
-        location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)(?:$|/)  { return 404; }
-        location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console)                { return 404; }
+        location / {
+            rewrite ^ /index.php;
+        }
 
-        # Ensure this block, which passes PHP files to the PHP process, is above the blocks
-        # which handle static assets (as seen below). If this block is not declared first,
-        # then Nginx will encounter an infinite rewriting loop when it prepends `/index.php`
-        # to the URI, resulting in a HTTP 500 error response.
-        location ~ \.php(?:$|/) {
-            fastcgi_split_path_info ^(.+?\.php)(/.*)$;
+        location ~ ^\/(?:build|tests|config|lib|3rdparty|templates|data)\/ {
+            deny all;
+        }
+        location ~ ^\/(?:\.|autotest|occ|issue|indie|db_|console) {
+            deny all;
+        }
+
+        location ~ ^\/(?:index|remote|public|cron|core\/ajax\/update|status|ocs\/v[12]|updater\/.+|oc[ms]-provider\/.+)\.php(?:$|\/) {
+            fastcgi_split_path_info ^(.+?\.php)(\/.*|)$;
             set $path_info $fastcgi_path_info;
-
             try_files $fastcgi_script_name =404;
-
             include fastcgi_params;
             fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
             fastcgi_param PATH_INFO $path_info;
-            #fastcgi_param HTTPS on;
+            # fastcgi_param HTTPS on;
 
-            fastcgi_param modHeadersAvailable true;         # Avoid sending the security headers twice
-            fastcgi_param front_controller_active true;     # Enable pretty urls
+            # Avoid sending the security headers twice
+            fastcgi_param modHeadersAvailable true;
+
+            # Enable pretty urls
+            fastcgi_param front_controller_active true;
             fastcgi_pass php-handler;
-
             fastcgi_intercept_errors on;
             fastcgi_request_buffering off;
         }
 
-        location ~ \.(?:css|js|svg|gif)$ {
+        location ~ ^\/(?:updater|oc[ms]-provider)(?:$|\/) {
+            try_files $uri/ =404;
+            index index.php;
+        }
+
+        # Adding the cache control header for js, css and map files
+        # Make sure it is BELOW the PHP block
+        location ~ \.(?:css|js|woff2?|svg|gif|map)$ {
             try_files $uri /index.php$request_uri;
-            expires 6M;         # Cache-Control policy borrowed from `.htaccess`
-            access_log off;     # Optional: Don't log access to assets
+            add_header Cache-Control "public, max-age=15778463";
+            # Add headers to serve security related headers (It is intended to
+            # have those duplicated to the ones above)
+            # Before enabling Strict-Transport-Security headers please read into
+            # this topic first.
+            #add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;" always;
+            #
+            # WARNING: Only add the preload option once you read about
+            # the consequences in https://hstspreload.org/. This option
+            # will add the domain to a hardcoded list that is shipped
+            # in all major browsers and getting removed from this list
+            # could take several months.
+            add_header Referrer-Policy "no-referrer" always;
+            add_header X-Content-Type-Options "nosniff" always;
+            add_header X-Download-Options "noopen" always;
+            add_header X-Frame-Options "SAMEORIGIN" always;
+            add_header X-Permitted-Cross-Domain-Policies "none" always;
+            add_header X-Robots-Tag "none" always;
+            add_header X-XSS-Protection "1; mode=block" always;
+
+            # Optional: Don't log access to assets
+            access_log off;
         }
 
-        location ~ \.woff2?$ {
+        location ~ \.(?:png|html|ttf|ico|jpg|jpeg|bcmap|mp4|webm)$ {
             try_files $uri /index.php$request_uri;
-            expires 7d;         # Cache-Control policy borrowed from `.htaccess`
-            access_log off;     # Optional: Don't log access to assets
-        }
-
-        # Rule borrowed from `.htaccess`
-        location /remote {
-            return 301 /remote.php$request_uri;
-        }
-
-        location / {
-            try_files $uri $uri/ /index.php$request_uri;
+            # Optional: Don't log access to other assets
+            access_log off;
         }
     }
 }
diff --git a/configuration/services/gitea.nix b/configuration/services/gitea.nix
index 221b976..2258566 100644
--- a/configuration/services/gitea.nix
+++ b/configuration/services/gitea.nix
@@ -24,7 +24,7 @@
 
         environment = {
           DB_TYPE = "postgres";
-          DB_HOST = "localhost:5432";
+          DB_HOST = "gitea-postgres:5432";
           DB_NAME = "gitea";
           DB_USER = "gitea";
 
diff --git a/configuration/services/minecraft.nix b/configuration/services/minecraft.nix
index 23705ac..bf8f58f 100644
--- a/configuration/services/minecraft.nix
+++ b/configuration/services/minecraft.nix
@@ -54,16 +54,6 @@ in {
   nixpkgs.config.allowUnfreePredicate = pkg:
     builtins.elem (lib.getName pkg) [ "forge-server" ];
 
-  users = {
-    extraUsers.minecraft = {
-      uid = config.ids.uids.minecraft;
-      group = config.users.extraGroups.minecraft.name;
-      isSystemUser = true;
-      description = "Minecraft server user";
-    };
-    extraGroups.minecraft = { gid = config.ids.gids.minecraft; };
-  };
-
   virtualisation.oci-containers.containers.minecraft-voor-kia = let
     properties = ./configs/minecraft/voor-kia/server.properties;
     icon = ./configs/minecraft/voor-kia/server-icon.png;
@@ -83,8 +73,9 @@ in {
       ];
 
       config = let
-        uid = toString config.users.extraUsers.minecraft.uid;
-        gid = toString config.users.extraGroups.minecraft.gid;
+        # Use the upstream minecraft uid
+        uid = toString config.ids.uids.minecraft;
+        gid = toString config.users.groups.nogroup.gid;
       in {
         Cmd = [ "forge-server" ] ++ minecraft-server-args;
         WorkingDir = "/var/lib/minecraft";
diff --git a/configuration/services/nextcloud.nix b/configuration/services/nextcloud.nix
index 7d94bcf..f8a0f08 100644
--- a/configuration/services/nextcloud.nix
+++ b/configuration/services/nextcloud.nix
@@ -11,7 +11,6 @@
         image = "nextcloud:fpm-alpine";
         dependsOn = [ "postgres" ];
         volumes = [
-          "nextcloud-root:/var/www/html"
           "nextcloud-apps:/var/www/html/custom_apps"
           "nextcloud-config:/var/www/html/config"
           "nextcloud-data:/var/www/html/data"
@@ -19,7 +18,7 @@
         environment = {
           POSTGRES_DB = "nextcloud";
           POSTGRES_USER = "nextcloud";
-          POSTGRES_HOST = "localhost";
+          POSTGRES_HOST = "nextcloud-postgres";
           OVERWRITEPROTOCOL = "https";
           TRUSTED_PROXIES = "127.0.0.1";
         };
@@ -35,10 +34,8 @@
       nginx = {
         image = "nginx:alpine";
         dependsOn = [ "nextcloud" ];
-        volumes = [
-          "nextcloud-root:/var/www/html:ro"
-          "${./configs/nginx-nextcloud.conf}:/etc/nginx/nginx.conf:ro"
-        ];
+        volumes =
+          [ "${./configs/nginx-nextcloud.conf}:/etc/nginx/nginx.conf:ro" ];
         extraOptions = [ "--volumes-from=nextcloud-nextcloud" ];
       };
 
diff --git a/configuration/services/webserver.nix b/configuration/services/webserver.nix
index d72b417..c1966a5 100644
--- a/configuration/services/webserver.nix
+++ b/configuration/services/webserver.nix
@@ -1,14 +1,10 @@
 { config, pkgs, ... }:
 
 {
-  users = {
-    extraUsers.webserver = {
-      uid = config.ids.uids.webserver;
-      group = config.users.extraGroups.webserver.name;
-      isSystemUser = true;
-      description = "tlater.net web server user";
-    };
-    extraGroups.webserver = { gid = config.ids.gids.webserver; };
+  users.extraUsers.webserver = {
+    uid = config.ids.uids.webserver;
+    isSystemUser = true;
+    description = "tlater.net web server user";
   };
 
   virtualisation.oci-containers.containers.webserver = {
@@ -20,8 +16,10 @@
       contents = pkgs.tlaternet-webserver.webserver;
 
       config = let
-        uid = toString config.users.extraUsers.webserver.uid;
-        gid = toString config.users.extraGroups.webserver.gid;
+        user = config.users.extraUsers.webserver;
+        group = config.users.groups.${user.group};
+        uid = toString user.uid;
+        gid = toString group.gid;
       in {
         Cmd = [ "tlaternet-webserver" ];
         Volumes = { "/srv/mail" = { }; };
diff --git a/flake.lock b/flake.lock
index 11de3e3..3be1860 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "flake-utils": {
       "locked": {
-        "lastModified": 1638122382,
-        "narHash": "sha256-sQzZzAbvKEqN9s0bzWuYmRaA03v40gaJ4+iL1LXjaeI=",
+        "lastModified": 1631561581,
+        "narHash": "sha256-3VQMV5zvxaVLvqqUrNz3iJelLw30mIVSfZmAaauM3dA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "74f7e4319258e287b0f9cb95426c9853b282730b",
+        "rev": "7e5bf3925f6fbdfaf50a2a7ca0be2879c4261d19",
         "type": "github"
       },
       "original": {
@@ -38,11 +38,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1639240632,
-        "narHash": "sha256-BAXhgnPOW1COIfZ9EOOFTdolalYS73MFHSRajgrSdZw=",
+        "lastModified": 1632990363,
+        "narHash": "sha256-SNqz+9Vt4yDHqw8u/CMFdzMQTulKoMlVGJdshfcb5O0=",
         "owner": "nixos",
         "repo": "nixos-hardware",
-        "rev": "2a7063461c3751d83869a2a0a8ebc59e34bec5b2",
+        "rev": "0a8b8054c9920368a3c15e6d766188fdf04b736f",
         "type": "github"
       },
       "original": {
@@ -54,16 +54,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1639161226,
-        "narHash": "sha256-75Y08ynJDTq6HHGIF+8IADBJSVip0UyWQH7jqSFnRR8=",
+        "lastModified": 1633267966,
+        "narHash": "sha256-gFKvZ5AmV/dDTKXVxacPbXe4R0BsFpwtVaQxuIm2nnk=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "573095944e7c1d58d30fc679c81af63668b54056",
+        "rev": "7daf35532d2d8bf5e6f7f962e6cd13a66d01a71d",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-21.11",
+        "ref": "nixos-21.05",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 8a0025f..a7b1ef7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "tlater.net host configuration";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-21.11";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-21.05";
     nixos-hardware.url = "github:nixos/nixos-hardware/master";
     flake-utils.url = "github:numtide/flake-utils";
     tlaternet-webserver = {