made swagger ip configurable

* the swagger ip used in the interactive examples is now configurable.

see #225

README.md

@@ -123,6 +123,7 @@ There are a bunch of environmental variables that can be set inside the docker c
 
 * `SIGNAL_CLI_GID`: Specifies the gid of the `signal-api` group inside the docker container. Defaults to `1000`
 
+* `SWAGGER_IP`: The IP that's used in the Swagger UI for the interactive examples. Defaults to the container ip.
 
 ## Clients & Libraries
 

entrypoint.sh

@@ -29,5 +29,7 @@ service supervisor start
 supervisorctl start all
 fi
 
+export HOST_IP=$(hostname -i)
+
 # Start API as signal-api user
 exec setpriv --reuid=${SIGNAL_CLI_UID} --regid=${SIGNAL_CLI_GID} --init-groups --inh-caps=$caps signal-cli-rest-api -signal-cli-config=${SIGNAL_CLI_CONFIG_DIR}

src/main.go

@@ -69,6 +69,15 @@ func main() {
 
 	router.Use(gin.Recovery())
 
+	port := utils.GetEnv("PORT", "8080")
+	if _, err := strconv.Atoi(port); err != nil {
+		log.Fatal("Invalid PORT ", port, " set. PORT needs to be a number")
+	}
+
+	defaultSwaggerIp := utils.GetEnv("HOST_IP", "127.0.0.1")
+	swaggerIp := utils.GetEnv("SWAGGER_IP", defaultSwaggerIp)
+	docs.SwaggerInfo.Host = swaggerIp + ":" + port
+
 	log.Info("Started Signal Messenger REST API")
 
 	supportsSignalCliNative := "0"
@@ -229,11 +238,6 @@ func main() {
 		}
 	}
 
-	port := utils.GetEnv("PORT", "8080")
-	if _, err := strconv.Atoi(port); err != nil {
-		log.Fatal("Invalid PORT ", port, " set. PORT needs to be a number")
-	}
-
 	swaggerUrl := ginSwagger.URL("http://127.0.0.1:" + string(port) + "/swagger/doc.json")
 	router.GET("/swagger/*any", ginSwagger.WrapHandler(swaggerFiles.Handler, swaggerUrl))