diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8fce603
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+data/
diff --git a/README.md b/README.md
index 08eaa85..3a467de 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,7 @@ The simplest way to launch Steam is by running:
 ```sh
 git clone https://github.com/arno01/steam.git
 cd steam
+chgrp docker data -R && chmod g+s data
 docker-compose run steam
 ```
 
diff --git a/data/README.md b/data/README.md
new file mode 100644
index 0000000..601e55e
--- /dev/null
+++ b/data/README.md
@@ -0,0 +1,9 @@
+Steam will store its data in this folder:
+
+- .steam/ for updates, game downloads & storage.
+- .local/share/Steam/ for account configuration.
+
+You must ensure that this folder belongs to `docker` group!
+Change that using:
+
+chgrp docker ../data -R && chmod g+s ../data
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
index 10f5962..05c0ee8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,7 +12,7 @@ services:
       - /etc/localtime:/etc/localtime:ro
       - /etc/machine-id:/etc/machine-id:ro
       - $XDG_RUNTIME_DIR/pulse:/run/user/1000/pulse
-      - data:/home
+      - ./data:/home/user
       # - /var/run/dbus/system_bus_socket:/var/run/dbus/system_bus_socket:ro
       # Ubuntu's NVIDIA driver:
       - /usr/lib/nvidia-361-prime:/h1_64:ro