diff --git a/README.md b/README.md
index 4c91d0a..529fb1d 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,10 @@ Run everything (frontend, backend, db, swagger, quests):
     docker compose build
     docker compose up -d
 
+If you want to enable social login, you should have OAuth client token in a `.env` file:
+
+    docker compose --env-file .env up -d
+
 ## Testing
 
 Run Cypress locally, using the current development containers:
@@ -42,6 +46,17 @@ Run Cypress in container, create brand-new containers along with it:
     docker compose -f docker-compose.prod.yml pull
     docker compose -f docker-compose.prod.yml up -d
 
+To enable social login, you should have OAuth client token in a `.env` file:
+You can copy from `example.env`
+
+    # .env
+    GOOGLE_CLIENT_ID=...
+    GOOGLE_CLIENT_SECRET=...
+
+To enable it:
+
+    docker compose --env-file .env -f docker-compose.prod.yml up -d
+
 ## Standalone App (without Docker)
 
 Source: `app/`
diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index ebc62c1..5a23b35 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -41,6 +41,8 @@ services:
       - MONGO_USER=user
       - MONGO_PASS=user-password
       - MONGO_DB=odyssey-test
+      - GOOGLE_CLIENT_ID=${GOOGLE_CLIENT_ID}
+      - GOOGLE_CLIENT_SECRET=${GOOGLE_CLIENT_SECRET}
 
   base:
     image: lancatlin/linux-odyssey:base
diff --git a/docker-compose.testing.yml b/docker-compose.testing.yml
index 658878c..a1ad2ea 100644
--- a/docker-compose.testing.yml
+++ b/docker-compose.testing.yml
@@ -36,11 +36,11 @@ services:
       - players
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
-    env_file:
-      - .env
     environment:
       - MONGO_URL=mongodb://user:user-password@db-test:27017/odyssey-test
       - DOCKER_NETWORK=linux-odyssey-players
+      - GOOGLE_CLIENT_ID=${GOOGLE_CLIENT_ID}
+      - GOOGLE_CLIENT_SECRET=${GOOGLE_CLIENT_SECRET}
 
   db-test:
     image: mongo
diff --git a/docker-compose.yml b/docker-compose.yml
index 2c964a0..c0afae7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -26,12 +26,12 @@ services:
       - ./server/swagger.yaml:/app/server/swagger.yaml
       - ./packages:/app/packages
       - ./quests:/app/quests
-    env_file:
-      - .env
     environment:
       - MONGO_URL=mongodb://db:27017/odyssey-test
       - DOCKER_NETWORK=linux-odyssey-players
       - HOST_PWD=${PWD}
+      - GOOGLE_CLIENT_ID=${GOOGLE_CLIENT_ID}
+      - GOOGLE_CLIENT_SECRET=${GOOGLE_CLIENT_SECRET}
   db:
     image: mongo
     networks:
diff --git a/example.env b/example.env
new file mode 100644
index 0000000..17418ff
--- /dev/null
+++ b/example.env
@@ -0,0 +1,2 @@
+GOOGLE_CLIENT_ID=
+GOOGLE_CLIENT_SECRET=
\ No newline at end of file