doc: update local plugin

readme.md

@@ -18,7 +18,7 @@ For security reasons, it is not possible to start a new plugin or modify an exis
 Once loaded, middleware plugins behave exactly like statically compiled middlewares.
 Their instantiation and behavior are driven by the dynamic configuration.
 
-Plugin dependencies must be [vendored](https://golang.org/ref/mod#tmp_25) for each plugin.
+Plugin dependencies must be [vendored](https://golang.org/ref/mod#vendoring) for each plugin.
 Vendored packages should be included in the plugin's GitHub repository. ([Go modules](https://blog.golang.org/using-go-modules) are not supported.)
 
 ### Configuration
@@ -68,23 +68,40 @@ http:
             Foo: Bar
 ```
 
-### Dev Mode
+### Local Mode
 
 Traefik also offers a developer mode that can be used for temporary testing of plugins not hosted on GitHub.
-To use a plugin in dev mode, the Traefik static configuration must define the module name (as is usual for Go packages) and a path to a [Go workspace](https://golang.org/doc/gopath_code.html#Workspaces), which can be the local GOPATH or any directory.
+To use a plugin in local mode, the Traefik static configuration must define the module name (as is usual for Go packages) and a path to a [Go workspace](https://golang.org/doc/gopath_code.html#Workspaces), which can be the local GOPATH or any directory.
+
+The plugins must be placed in `./plugins-local` directory, which should be next to the Traefik binary.
+The source code of the plugin should be organized as follows:
+
+```
+./plugins-local/
+    └── src
+        └── github.com
+            └── traefik
+                └── plugindemo
+                    ├── demo.go
+                    ├── demo_test.go
+                    ├── go.mod
+                    ├── LICENSE
+                    ├── Makefile
+                    └── readme.md
+```
 
 ```yaml
 # Static configuration
 pilot:
   token: xxxxx
 
 experimental:
-  devPlugin:
-    goPath: /plugins/go
-    moduleName: github.com/traefik/plugindemo
+  localPlugin:
+    example:
+      moduleName: github.com/traefik/plugindemo
 ```
 
-(In the above example, the `plugindemo` plugin will be loaded from the path `/plugins/go/src/github.com/traefik/plugindemo`.)
+(In the above example, the `plugindemo` plugin will be loaded from the path `./plugins-local/src/github.com/traefik/plugindemo`.)
 
 ```yaml
 # Dynamic configuration
@@ -108,15 +125,11 @@ http:
   middlewares:
     my-plugin:
       plugin:
-        dev:
+        example:
           headers:
             Foo: Bar
 ```
 
-#### Dev Mode Limitations
-
-Note that only one plugin can be tested in dev mode at a time, and when using dev mode, Traefik will shut down after 30 minutes.
-
 ## Defining a Plugin
 
 A plugin package must define the following exported Go objects:
@@ -150,7 +163,7 @@ func CreateConfig() *Config {
 type Example struct {
 	next     http.Handler
 	name     string
-    // ...
+	// ...
 }
 
 // New created a new plugin.