diff --git a/back/package.json b/back/package.json
index a20c876f..fc7ad60e 100644
--- a/back/package.json
+++ b/back/package.json
@@ -10,7 +10,8 @@
     "profile": "tsc && node --prof ./dist/server.js",
     "test": "ts-node node_modules/jasmine/bin/jasmine --config=jasmine.json",
     "lint": "node_modules/.bin/eslint src/ . --ext .ts",
-    "fix": "node_modules/.bin/eslint --fix src/ . --ext .ts"
+    "fix": "node_modules/.bin/eslint --fix src/ . --ext .ts",
+    "proto": "protoc --plugin=\"protoc-gen-ts=./node_modules/.bin/protoc-gen-ts\" --js_out=\"import_style=commonjs,binary:src/proto/generated\" --ts_out=\"src/proto/generated\" src/proto/messages.proto"
   },
   "repository": {
     "type": "git",
@@ -44,6 +45,7 @@
     "body-parser": "^1.19.0",
     "express": "^4.17.1",
     "generic-type-guard": "^3.2.0",
+    "google-protobuf": "^3.13.0",
     "http-status-codes": "^1.4.0",
     "jsonwebtoken": "^8.5.1",
     "prom-client": "^12.0.0",
@@ -58,6 +60,7 @@
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
     "eslint": "^6.8.0",
-    "jasmine": "^3.5.0"
+    "jasmine": "^3.5.0",
+    "ts-protoc-gen": "^0.13.0"
   }
 }
diff --git a/back/src/proto/generated/.gitkeep b/back/src/proto/generated/.gitkeep
new file mode 100644
index 00000000..e69de29b
diff --git a/back/src/proto/messages.proto b/back/src/proto/messages.proto
new file mode 100644
index 00000000..ea9fafe2
--- /dev/null
+++ b/back/src/proto/messages.proto
@@ -0,0 +1,6 @@
+syntax = "proto3";
+
+message SetPlayerDetailsMessage {
+  string name = 1;
+  repeated string characterLayers = 2;
+}
diff --git a/back/yarn.lock b/back/yarn.lock
index f660a5c8..fe5c26e1 100644
--- a/back/yarn.lock
+++ b/back/yarn.lock
@@ -822,6 +822,11 @@ globals@^12.1.0:
   dependencies:
     type-fest "^0.8.1"
 
+google-protobuf@^3.13.0, google-protobuf@^3.6.1:
+  version "3.13.0"
+  resolved "https://registry.yarnpkg.com/google-protobuf/-/google-protobuf-3.13.0.tgz#909c5983d75dd6101ed57c79e0528d000cdc3251"
+  integrity sha512-ZIf3qfLFayVrPvAjeKKxO5FRF1/NwRxt6Dko+fWEMuHwHbZx8/fcaAao9b0wCM6kr8qeg2te8XTpyuvKuD9aKw==
+
 graceful-fs@^4.1.2:
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.3.tgz#4a12ff1b60376ef09862c2093edd908328be8423"
@@ -1764,6 +1769,13 @@ ts-node@*:
     source-map-support "^0.5.6"
     yn "3.1.1"
 
+ts-protoc-gen@^0.13.0:
+  version "0.13.0"
+  resolved "https://registry.yarnpkg.com/ts-protoc-gen/-/ts-protoc-gen-0.13.0.tgz#2763ae4e4a1a7d7001d53d2f3043357c691701ea"
+  integrity sha512-j18X4rkDBbG/ZHUJy88WFeZP6mStGow5uREaohowlHXTu3/N7WcpyPhb7Vh6wN38ERmc/AkT9gqT98+vtlRhJA==
+  dependencies:
+    google-protobuf "^3.6.1"
+
 tsconfig@^7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/tsconfig/-/tsconfig-7.0.0.tgz#84538875a4dc216e5c4a5432b3a4dec3d54e91b7"
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 6f859759..beddf025 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -66,7 +66,7 @@ services:
       - "traefik.http.routers.maps-ssl.service=maps"
 
   back:
-    image: thecodingmachine/nodejs:12
+    image: thecodingmachine/workadventure-back-base:latest
     command: yarn dev
     #command: yarn run profile
     environment: