diff --git a/docker/sftpgo/alpine/Dockerfile b/docker/sftpgo/alpine/Dockerfile
index 6f128436..3d094915 100644
--- a/docker/sftpgo/alpine/Dockerfile
+++ b/docker/sftpgo/alpine/Dockerfile
@@ -27,5 +27,17 @@ RUN chmod +x /bin/entrypoint.sh
 VOLUME [ "/data", "/srv/sftpgo/config", "/srv/sftpgo/backups" ]
 EXPOSE 2022 8080
 
+# uncomment the following settings to enable FTP support
+#ENV SFTPGO_FTPD__BIND_PORT=2121
+#ENV SFTPGO_FTPD__FORCE_PASSIVE_IP=<your FTP visibile ip here>
+#EXPOSE 2121
+
+# we need to expose the passive ports range too
+#EXPOSE 50000-50100
+
+# it is a good idea to provide certificates to enable FTPS too
+#ENV SFTPGO_FTPD__CERTIFICATE_FILE=/srv/sftpgo/config/mycert.crt
+#ENV SFTPGO_FTPD__CERTIFICATE_KEY_FILE=/srv/sftpgo/config/mycert.key
+
 ENTRYPOINT ["/bin/entrypoint.sh"]
 CMD ["serve"]
diff --git a/docker/sftpgo/alpine/README.md b/docker/sftpgo/alpine/README.md
index bbab1e9a..112ca518 100644
--- a/docker/sftpgo/alpine/README.md
+++ b/docker/sftpgo/alpine/README.md
@@ -46,6 +46,8 @@ sudo docker rm sftpgo && sudo docker run --name sftpgo \
   sftpgo
 ```
 
+If you want to enable FTP/S you also need the publish the FTP port and the FTP passive port range by adding, for example, the following options to the `docker run` command `-p 2121:2121 -p 50000-50100:50000-50100`
+
 The script `entrypoint.sh` makes sure to correct the permissions of directories and start the process with the right user.
 
 Several images can be run with different parameters.
diff --git a/docker/sftpgo/debian/Dockerfile b/docker/sftpgo/debian/Dockerfile
index fac03db0..40a8ddb7 100644
--- a/docker/sftpgo/debian/Dockerfile
+++ b/docker/sftpgo/debian/Dockerfile
@@ -71,5 +71,17 @@ ENV SFTPGO_HTTPD__STATIC_FILES_PATH=${WEB_DIR}/static
 ENV SFTPGO_DATA_PROVIDER__USERS_BASE_DIR=${DATA_DIR}
 ENV SFTPGO_HTTPD__BACKUPS_PATH=${BACKUPS_DIR}
 
+# uncomment the following settings to enable FTP support
+#ENV SFTPGO_FTPD__BIND_PORT=2121
+#ENV SFTPGO_FTPD__FORCE_PASSIVE_IP=<your FTP visibile ip here>
+#EXPOSE 2121
+# we need to expose the passive ports range too
+#EXPOSE 50000-50100
+
+# it is a good idea to provide certificates to enable FTPS too
+#ENV SFTPGO_FTPD__CERTIFICATE_FILE=${CONFIG_DIR}/mycert.crt
+#ENV SFTPGO_FTPD__CERTIFICATE_KEY_FILE=${CONFIG_DIR}/mycert.key
+
+
 ENTRYPOINT ["sftpgo"]
 CMD ["serve"]
diff --git a/docker/sftpgo/debian/README.md b/docker/sftpgo/debian/README.md
index 6f988776..1ed70124 100644
--- a/docker/sftpgo/debian/README.md
+++ b/docker/sftpgo/debian/README.md
@@ -53,3 +53,5 @@ and finally you can run the image using something like this:
 ```bash
 docker rm sftpgo && docker run --name sftpgo -p 8080:8080 -p 2022:2022 --mount type=bind,source=/srv/sftpgo/data,target=/app/data --mount type=bind,source=/srv/sftpgo/config,target=/app/config --mount type=bind,source=/srv/sftpgo/backups,target=/app/backups drakkan/sftpgo
 ```
+
+If you want to enable FTP/S you also need the publish the FTP port and the FTP passive port range by adding, for example, the following options to the `docker run` command `-p 2121:2121 -p 50000-50100:50000-50100`