diff --git a/composer.json b/composer.json
index ed0f2cbd5..f4e9f5da7 100644
--- a/composer.json
+++ b/composer.json
@@ -75,7 +75,8 @@
     "scripts": {
         "auto-scripts": {
             "cache:clear": "symfony-cmd",
-            "assets:install --symlink --relative %PUBLIC_DIR%": "symfony-cmd"
+            "assets:install --symlink --relative %PUBLIC_DIR%": "symfony-cmd",
+            "assets:install %PUBLIC_DIR%": "symfony-cmd"
         },
         "post-install-cmd": [
             "@auto-scripts"
diff --git a/config/packages/framework.yaml b/config/packages/framework.yaml
index 78121542a..6cbaa3761 100644
--- a/config/packages/framework.yaml
+++ b/config/packages/framework.yaml
@@ -1,8 +1,8 @@
+# see https://symfony.com/doc/current/reference/configuration/framework.html
 framework:
     secret: '%env(APP_SECRET)%'
     csrf_protection: true
     http_method_override: true
-    trusted_hosts: null
 
     # Enables session support. Note that the session will ONLY be started if you read or write from it.
     # Remove or comment this section to explicitly disable session support.
@@ -11,17 +11,7 @@ framework:
         cookie_secure: auto
         cookie_samesite: lax
 
-    # When using the HTTP Cache, ESI allows to render page fragments separately
-    # and with different cache configurations for each fragment
-    # https://symfony.com/doc/current/http_cache/esi.html
     esi: true
     fragments: true
-
     php_errors:
         log: true
-
-    # The 'ide' option turns all of the file paths in an exception page
-    # into clickable links that open the given file using your favorite IDE.
-    # When 'ide' is set to null the file is opened in your web browser.
-    # See https://symfony.com/doc/current/reference/configuration/framework.html#ide
-    ide: null
diff --git a/config/packages/prod/deprecations.yaml b/config/packages/prod/deprecations.yaml
new file mode 100644
index 000000000..920a06197
--- /dev/null
+++ b/config/packages/prod/deprecations.yaml
@@ -0,0 +1,8 @@
+# As of Symfony 5.1, deprecations are logged in the dedicated "deprecation" channel when it exists
+#monolog:
+#    channels: [deprecation]
+#    handlers:
+#        deprecation:
+#            type: stream
+#            channels: [deprecation]
+#            path: "%kernel.logs_dir%/%kernel.environment%.deprecations.log"
diff --git a/config/packages/prod/monolog.yaml b/config/packages/prod/monolog.yaml
index c8a16ec2b..bfe69c015 100644
--- a/config/packages/prod/monolog.yaml
+++ b/config/packages/prod/monolog.yaml
@@ -14,13 +14,3 @@ monolog:
             type: console
             process_psr_3_messages: false
             channels: ["!event", "!doctrine"]
-
-        # Uncomment to log deprecations
-        #deprecation:
-        #    type: stream
-        #    path: "%kernel.logs_dir%/%kernel.environment%.deprecations.log"
-        #deprecation_filter:
-        #    type: filter
-        #    handler: deprecation
-        #    max_level: info
-        #    channels: ["php"]
diff --git a/config/packages/security.yaml b/config/packages/security.yaml
index e8b2fd220..ea350f69b 100644
--- a/config/packages/security.yaml
+++ b/config/packages/security.yaml
@@ -52,7 +52,7 @@ security:
                 # The name of the route to redirect to after logging out
                 target: homepage
 
-    # Used to restrict access for large sections of your site
+    # Easy way to control access for large sections of your site
     # Note: Only the *first* access control that matches will be used
     access_control:
         # this is a catch-all for the admin area
diff --git a/config/preload.php b/config/preload.php
new file mode 100644
index 000000000..5ebcdb215
--- /dev/null
+++ b/config/preload.php
@@ -0,0 +1,5 @@
+<?php
+
+if (file_exists(dirname(__DIR__).'/var/cache/prod/App_KernelProdContainer.preload.php')) {
+    require dirname(__DIR__).'/var/cache/prod/App_KernelProdContainer.preload.php';
+}
diff --git a/config/services.yaml b/config/services.yaml
index e4f668ccd..fa5e29fca 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -22,13 +22,17 @@ services:
     # makes classes in src/ available to be used as services
     # this creates a service per class whose id is the fully-qualified class name
     App\:
-        resource: '../src/*'
-        exclude: '../src/{DependencyInjection,Entity,Tests,Kernel.php}'
+        resource: '../src/'
+        exclude:
+            - '../src/DependencyInjection/'
+            - '../src/Entity/'
+            - '../src/Kernel.php'
+            - '../src/Tests/'
 
     # controllers are imported separately to make sure services can be injected
     # as action arguments even if you don't extend any base controller class
     App\Controller\:
-        resource: '../src/Controller'
+        resource: '../src/Controller/'
         tags: ['controller.service_arguments']
 
     # when the service definition only contains arguments, you can omit the
diff --git a/src/Kernel.php b/src/Kernel.php
index d426dfd68..f36b8bcd6 100644
--- a/src/Kernel.php
+++ b/src/Kernel.php
@@ -24,14 +24,24 @@ protected function configureContainer(ContainerConfigurator $container): void
     {
         $container->import('../config/{packages}/*.yaml');
         $container->import('../config/{packages}/'.$this->environment.'/*.yaml');
-        $container->import('../config/{services}.yaml');
-        $container->import('../config/{services}_'.$this->environment.'.yaml');
+
+        if (is_file(\dirname(__DIR__).'/config/services.yaml')) {
+            $container->import('../config/services.yaml');
+            $container->import('../config/{services}_'.$this->environment.'.yaml');
+        } elseif (is_file($path = \dirname(__DIR__).'/config/services.php')) {
+            (require $path)($container->withPath($path), $this);
+        }
     }
 
     protected function configureRoutes(RoutingConfigurator $routes): void
     {
         $routes->import('../config/{routes}/'.$this->environment.'/*.yaml');
         $routes->import('../config/{routes}/*.yaml');
-        $routes->import('../config/{routes}.yaml');
+
+        if (is_file(\dirname(__DIR__).'/config/routes.yaml')) {
+            $routes->import('../config/routes.yaml');
+        } elseif (is_file($path = \dirname(__DIR__).'/config/routes.php')) {
+            (require $path)($routes->withPath($path), $this);
+        }
     }
 }
diff --git a/symfony.lock b/symfony.lock
index 34a9017d3..3398f7953 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -68,23 +68,23 @@
             "repo": "github.com/symfony/recipes",
             "branch": "master",
             "version": "3.0",
-            "ref": "fc52d86631a6dfd9fdf3381d0b7e3df2069e51b3"
+            "ref": "e5b542d4ef47d8a003c91beb35650c76907f7e53"
         },
         "files": [
             "src/DataFixtures/AppFixtures.php"
         ]
     },
     "doctrine/doctrine-migrations-bundle": {
-        "version": "1.2",
+        "version": "2.2",
         "recipe": {
             "repo": "github.com/symfony/recipes",
             "branch": "master",
-            "version": "1.2",
-            "ref": "c1431086fec31f17fbcfe6d6d7e92059458facc1"
+            "version": "2.2",
+            "ref": "baaa439e3e3179e69e3da84b671f0a3e4a2f56ad"
         },
         "files": [
             "config/packages/doctrine_migrations.yaml",
-            "src/Migrations/.gitignore"
+            "migrations/.gitignore"
         ]
     },
     "doctrine/event-manager": {
@@ -285,12 +285,13 @@
             "repo": "github.com/symfony/recipes",
             "branch": "master",
             "version": "5.1",
-            "ref": "37b4ec59eda3eb89705f21a0da7231862495ce0a"
+            "ref": "6ee1194b036378b21884e7f57b6a2ac721167f16"
         },
         "files": [
             "config/packages/cache.yaml",
             "config/packages/framework.yaml",
             "config/packages/test/framework.yaml",
+            "config/preload.php",
             "config/routes/dev/framework.yaml",
             "config/services.yaml",
             "public/index.php",
@@ -343,10 +344,11 @@
             "repo": "github.com/symfony/recipes",
             "branch": "master",
             "version": "3.3",
-            "ref": "a89f4cd8a232563707418eea6c2da36acd36a917"
+            "ref": "d7249f7d560f6736115eee1851d02a65826f0a56"
         },
         "files": [
             "config/packages/dev/monolog.yaml",
+            "config/packages/prod/deprecations.yaml",
             "config/packages/prod/monolog.yaml",
             "config/packages/test/monolog.yaml"
         ]
@@ -420,12 +422,12 @@
         ]
     },
     "symfony/security-bundle": {
-        "version": "4.4",
+        "version": "5.1",
         "recipe": {
             "repo": "github.com/symfony/recipes",
             "branch": "master",
-            "version": "4.4",
-            "ref": "7b4408dc203049666fe23fabed23cbadc6d8440f"
+            "version": "5.1",
+            "ref": "0a4bae19389d3b9cba1ca0102e3b2bccea724603"
         },
         "files": [
             "config/packages/security.yaml"