diff --git a/CHANGELOG.md b/CHANGELOG.md
index 43f172b..82f05d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Changelog
 
+- 2018-11-28 [Feature] Easily change openedx docker image
 - 2018-11-28 [Feature] Enable comprehensive theming!
 - 2018-11-28 [Improvement] Get rid of datadog
 - 2018-11-28 [Improvement] Upgrade docker images to ubuntu 18.04 for android, forum, notes, xqueue
diff --git a/README.md b/README.md
index 98e0593..2f62e2e 100644
--- a/README.md
+++ b/README.md
@@ -285,6 +285,14 @@ You can then restart the services which will now be running your forked version
 
 Note that your release must be a fork of Hawthorn in order to work. Otherwise, you may have important compatibility issues with other services.
 
+### How to run a customized Docker image instead of [regis/openedx](https://hub.docker.com/r/regis/openedx/)?
+
+Add the following content to the `.env` file:
+
+    OPENEDX_DOCKER_IMAGE=myusername/myimage:mytag
+
+Note that the `make build` and `make push` command will no longer work.
+
 ### "Cannot start service nginx: driver failed programming external connectivity"
 
 The containerized Nginx needs to listen to ports 80 and 443 on the host. If there is already a webserver, such as Apache or Nginx, running on the host, the nginx container will not be able to start. There are two solutions:
diff --git a/docker-compose.yml b/docker-compose.yml
index 9b9c726..54cd90b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -78,7 +78,7 @@ services:
   ############# LMS and CMS
 
   lms:
-    image: regis/openedx:hawthorn
+    image: ${OPENEDX_DOCKER_IMAGE:-regis/openedx:hawthorn}
     build:
       context: ./openedx
     environment:
@@ -98,7 +98,7 @@ services:
       - smtp
 
   cms:
-    image: regis/openedx:hawthorn
+    image: ${OPENEDX_DOCKER_IMAGE:-regis/openedx:hawthorn}
     build:
       context: ./openedx
     environment:
@@ -119,7 +119,7 @@ services:
 
   # We could probably create one service per queue here. For small instances, it is not necessary.
   lms_worker:
-    image: regis/openedx:hawthorn
+    image: ${OPENEDX_DOCKER_IMAGE:-regis/openedx:hawthorn}
     build:
       context: ./openedx
     environment:
@@ -135,7 +135,7 @@ services:
       - lms
 
   cms_worker:
-    image: regis/openedx:hawthorn
+    image: ${OPENEDX_DOCKER_IMAGE:-regis/openedx:hawthorn}
     build:
       context: ./openedx
     environment: