diff --git a/Dockerfile b/Dockerfile
index 071df3d..dc7a99f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,23 +16,28 @@
 
 FROM debian:jessie
 
+# Prevent the packages installation to halt.
 ENV DEBIAN_FRONTEND noninteractive
 
+# Prepare the directories.
 RUN mkdir /.seafile ;\
     mkdir /.supervisord ;\
     mkdir /volume
 
+# Put the core functionalities into the image.
 COPY assets/seafile.list /etc/apt/sources.list.d/
 COPY assets/supervisord.conf /.supervisord/
 COPY assets/infinite-seaf-cli-start.sh /
 COPY entrypoint.sh /
 
+# Install both seafile-cli and supervisord.
 RUN apt-key adv \
         --keyserver hkp://keyserver.ubuntu.com:80 \
         --recv-keys 8756C4F765C9AC3CB6B85D62379CE192D401AB61
 RUN apt-get update ;\
     apt-get install -o Dpkg::Options::="--force-confold" -y seafile-cli supervisor
 
+# Configure the user.
 ENV UNAME=seafuser
 ENV UID=1000
 ENV GID=1000
diff --git a/README.md b/README.md
index 28096ed..667e633 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,67 @@
-# Seafile Client
+# Available tags.
 
+
+# Purpose
+Docker Seafile Client allow you to sync a Seafile library within a container. Essentially, you have the ability to:
+* **Share** data from a **Seafile library** as a volume to **other containers**.
+## Seafile?
+[Seafile is a cloud storage software](https://www.seafile.com/).
+
+
+# Usage
+The *Seafile* daemon is running from `/.seafile/` and `~/.ccnet`.
+The library is synced at `/volume/`.
+
+The *Seafile* daemon is managed with *supervisord* since it can't run as a foreground process.
+The *supervisord* is running from `/.supervisord/`, the `supervisord.conf`, `supervisord.log` and `supervisord.pid` can be found there.
+*supervisord* also manage a shell script, `/seaf-cli-start.sh` which run `seaf-cli start` every hour: the synchronisation might not work properly if the previously is not run from times to times, for an unresolved reason.
+## Examples
+You would have to share the path `/volume/` to other containers, with the following approaches:
+### Docker CLI
+`docker run `
+### docker-compose
+```yaml
+version: "3.4"
+
+services:
+  seafile-sync:
+    image: registry.gitlab.com/flwgns-docker/docker-seafile-client:latest
+    volumes:
+      - your_shared_volume:/volume
+    environment:
+      - SEAF_SERVER_URL=    # The URL to your Seafile server.
+      - SEAF_USERNAME=      # Your Seafile username.
+      - SEAF_PASSWORD=      # Your Seafile password
+      - SEAF_LIBRARY_UUID=  # The Seafile library UUID you want to sync with.
+      - UID=                # Default is 1000.
+      - GID=                # Default is 1000.
+
+volumes:
+  your_shared_volume:
+```
+
+
+# Environment variables
+The following environment variable are available.
+
+## Seafile
+This Docker **must be configured with the following**, **otherwise** it **will not run**:
+## SEAF_SERVER_URL
+The URL to your Seafile server.
+## SEAF_USERNAME
+Your Seafile account's username.
+## SEAF_PASSWORD
+Your Seafile account's password.
+## SEAF_LIBRARY_UUID
+The Seafile library UUID you want to use.
+
+## User permissions
+This Docker is **not running as `root` but as `seafuser`**. You can override the user/group ID used with:
+### UID
+The user ID defaults to `1000`. You may want to override this variable to prevent permission issues.
+### GID
+The group ID defaults to `1000`. Similarly, you may want to override this variable to prevent permission issues.
+
+# Source code
+This Docker image is licensed under GPLv3.  
+The source code is available in [gitlab.com/flwgns-docker/docker-seafile-client](https://gitlab.com/flwgns-docker/docker-seafile-client/).
\ No newline at end of file
diff --git a/assets/supervisord.conf b/assets/supervisord.conf
index fb053cf..4b38bba 100644
--- a/assets/supervisord.conf
+++ b/assets/supervisord.conf
@@ -14,12 +14,15 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+# Run in the foreground to keep the container running.
 [supervisord]
 nodaemon=true
 
+# Manage the Seafile daemon.
 [unix_http_socket]
 file=/seafile/seafile-data/seafile.sock
 
+# Manage the infinite `seaf-cli start`.
 [program:seaf-cli-start-loop]
 command=/bin/bash /infinite-seaf-cli-start.sh
 process_name=%(program_name)s
diff --git a/docker-compose.yml b/docker-compose.yml
index e7aaffd..46072ee 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,11 +2,16 @@ version: "3.4"
 
 services:
   seafile-sync:
-    image: seafvol:latest
+    image: registry.gitlab.com/flwgns-docker/docker-seafile-client:latest
+    volumes:
+      your_shared_volume:/volume
     environment:
-      - SERVER=
-      - USERNAME=
-      - PASSWORD=
-      - LIBRARY_ID=
+      - SEAF_SERVER=
+      - SEAF_USERNAME=
+      - SEAF_PASSWORD=
+      - SEAF_LIBRARY_UUID=
       - UID=
-      - GID=
\ No newline at end of file
+      - GID=
+
+volumes:
+  your_shared_volume:
\ No newline at end of file
diff --git a/entrypoint.sh b/entrypoint.sh
index e26ab88..9983944 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -22,9 +22,13 @@ supervisord_conf=/.supervisord/supervisord.conf
 supervisord_pid=/.supervisord/supervisord.pid
 supervisord_log=/.supervisord/supervisord.log
 
+# Safely initialize Seafile.
 /usr/bin/seaf-cli init -d /.seafile
 while [ ! -f $seafile_ini ]; do sleep 1; done
+# Safely start the Seafile daemon.
 /usr/bin/seaf-cli start
 while [ ! -S $seafile_sock ]; do sleep 1; done
-/usr/bin/seaf-cli sync -u $USERNAME -p $PASSWORD -s $SERVER -l $LIBRARY_ID -d /volume
+# Start the synchronisation.
+/usr/bin/seaf-cli sync -u $SEAF_USERNAME -p $SEAF_PASSWORD -s $SEAF_SERVER_URL -l $SEAF_LIBRARY_UUID -d /volume
+# Start the supervisord.
 /usr/bin/supervisord -u $UNAME -c $supervisord_conf -j $supervisord_pid -l $supervisord_log
\ No newline at end of file