diff --git a/.gitignore b/.gitignore
index fce340f..d29257c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,12 @@
flexisip-account-manager/
rpmbuild/
+.env.*
+
flexiapi/node_modules
flexiapi/public/hot
flexiapi/public/storage
+flexiapi/public/css/*.style.css
flexiapi/storage/*.key
flexiapi/vendor
flexiapi/.env
diff --git a/flexiapi/.env.example b/flexiapi/.env.example
index 3046e3c..a000f4d 100644
--- a/flexiapi/.env.example
+++ b/flexiapi/.env.example
@@ -5,6 +5,10 @@ APP_DEBUG=false
APP_URL=http://localhost
APP_SIP_DOMAIN=
+INSTANCE_COPYRIGHT=
+INSTANCE_INTRO_REGISTRATION=
+INSTANCE_CUSTOM_THEME=false
+
LOG_CHANNEL=stack
DB_DATABASE=/var/www/flexiapi/db.sqlite
diff --git a/flexiapi/README.md b/flexiapi/README.md
index 9c547d3..916037e 100644
--- a/flexiapi/README.md
+++ b/flexiapi/README.md
@@ -26,6 +26,41 @@ Complete all the other variables in the `.env` file:
- SMTP configuration
- App name, SIP domain…
+### Multi instances environement
+
+FlexiAPI can also handle multi domains setup.
+
+To do so, configure several web servers virtualhosts and set a specific `APP_ENV` environement variable in each of them.
+
+With Apache, use the [mod_env](https://httpd.apache.org/docs/2.4/mod/mod_env.html) module.
+
+ SetEnv APP_ENV foobar
+
+On nginx use `fastcgi_param` to pass the parameter directly to PHP.
+
+ location ~ [^/]\.php(/|$) {
+ …
+ include /etc/nginx/fastcgi_params;
+ fastcgi_param APP_ENV foobar;
+ }
+
+Note that if `APP_ENV` is not set FlexiAPI will directly use the default `.env` file.
+
+FlexiAPI will then try to load a custom configuration file with the following name `.env.$APP_ENV`. So for the previous example `.env.foobar`.
+
+You can then configure your instances with specific values.
+
+ INSTANCE_COPYRIGHT="FooBar - Since 1997"
+ INSTANCE_INTRO_REGISTRATION="Welcome on the FooBar Server"
+ INSTANCE_CUSTOM_THEME=true
+ …
+
+#### Custom theme
+
+If you set `INSTANCE_CUSTOM_THEME` to true, FlexiAPI will try to load a CSS file located in `public/css/$APP_ENV.style.css`. If the file doesn't exists it will fallback to `public/css/style.css`.
+
+We advise you to copy the `style.css` file and rename it to make your custom CSS configurations for your instance.
+
### SELinux
If you are running on a CentOS/RedHat machine, please ensure that SELinux is correctly configured.
diff --git a/flexiapi/app/Configuration.php b/flexiapi/app/Configuration.php
deleted file mode 100644
index cd93298..0000000
--- a/flexiapi/app/Configuration.php
+++ /dev/null
@@ -1,11 +0,0 @@
- '@' . config('app.sip_domain'),
- 'configuration' => Configuration::first()
+ 'domain' => '@' . config('app.sip_domain')
]);
}
diff --git a/flexiapi/app/Http/Controllers/Admin/ConfigurationController.php b/flexiapi/app/Http/Controllers/Admin/ConfigurationController.php
deleted file mode 100644
index efb770d..0000000
--- a/flexiapi/app/Http/Controllers/Admin/ConfigurationController.php
+++ /dev/null
@@ -1,34 +0,0 @@
- $configuration
- ]);
- }
-
- public function update(Request $request)
- {
- $configuration = Configuration::first();
- if (!$configuration) $configuration = new Configuration;
-
- $configuration->copyright = $request->get('copyright');
- $configuration->intro_registration = $request->get('intro_registration');
- $configuration->custom_theme = $request->input('custom_theme', false);
- $configuration->save();
-
- return redirect()->route('admin.configuration.update');
- }
-}
diff --git a/flexiapi/config/instance.php b/flexiapi/config/instance.php
new file mode 100644
index 0000000..945c05c
--- /dev/null
+++ b/flexiapi/config/instance.php
@@ -0,0 +1,7 @@
+ env('INSTANCE_COPYRIGHT', null),
+ 'intro_registration' => env('INSTANCE_INTRO_REGISTRATION', null),
+ 'custom_theme' => env('INSTANCE_CUSTOM_THEME', false),
+];
\ No newline at end of file
diff --git a/flexiapi/database/migrations/2020_05_05_150015_create_configuration_table.php b/flexiapi/database/migrations/2020_05_05_150015_create_configuration_table.php
deleted file mode 100644
index 841d792..0000000
--- a/flexiapi/database/migrations/2020_05_05_150015_create_configuration_table.php
+++ /dev/null
@@ -1,24 +0,0 @@
-bigIncrements('id');
- $table->string('copyright')->nullable();
- $table->text('intro_registration')->nullable();
- $table->boolean('custom_theme')->default(false);
- $table->timestamps();
- });
- }
-
- public function down()
- {
- Schema::dropIfExists('configuration');
- }
-}
diff --git a/flexiapi/resources/views/account/index.blade.php b/flexiapi/resources/views/account/index.blade.php
index 94d7d48..83ba531 100644
--- a/flexiapi/resources/views/account/index.blade.php
+++ b/flexiapi/resources/views/account/index.blade.php
@@ -40,12 +40,6 @@