diff --git a/Dockerfile b/Dockerfile
index fca70c20..a68aef3f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,8 @@
 FROM python:3.7-alpine
 
+ENV PORT="8000"
+
+# ihatemoney configuration
 ENV DEBUG="False" \
     ACTIVATE_ADMIN_DASHBOARD="False" \
     ACTIVATE_DEMO_PROJECT="True" \
@@ -29,5 +32,5 @@ ADD . /src
 RUN pip install --no-cache-dir -e /src
 
 VOLUME /database
-EXPOSE 8000
+EXPOSE ${PORT}
 ENTRYPOINT ["/src/conf/entrypoint.sh"]
diff --git a/conf/entrypoint.sh b/conf/entrypoint.sh
index be1e2806..c6a90985 100755
--- a/conf/entrypoint.sh
+++ b/conf/entrypoint.sh
@@ -3,7 +3,7 @@
 # Fail the whole script on the first failure.
 set -e
 
-cat <<EOF > /etc/ihatemoney/ihatemoney.cfg
+cat <<EOF >/etc/ihatemoney/ihatemoney.cfg
 DEBUG = $DEBUG
 ACTIVATE_ADMIN_DASHBOARD = $ACTIVATE_ADMIN_DASHBOARD
 ACTIVATE_DEMO_PROJECT = $ACTIVATE_DEMO_PROJECT
@@ -28,6 +28,6 @@ EOF
 
 # Start gunicorn without forking
 exec gunicorn ihatemoney.wsgi:application \
-     -b 0.0.0.0:8000 \
+     -b 0.0.0.0:"$PORT" \
      --log-syslog \
      "$@"
diff --git a/docker-compose.yml b/docker-compose.yml
index 0de37efc..3554c81c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -26,5 +26,6 @@ services:
       - SQLALCHEMY_TRACK_MODIFICATIONS=False
       - ENABLE_CAPTCHA=False
       - LEGAL_LINK=
+      - PORT=8000
     ports:
       - "8000:8000"