diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..76762ca
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# force LF in entrypoint.sh
+entrypoint.sh text eol=lf
diff --git a/3.0/apache/entrypoint.sh b/3.0/apache/entrypoint.sh
index 1aa7cdc..9e32817 100755
--- a/3.0/apache/entrypoint.sh
+++ b/3.0/apache/entrypoint.sh
@@ -23,6 +23,8 @@ URL_FORMAT=${URL_FORMAT:-'path'}
 DEBUG=${DEBUG:-0}
 DEBUG_SQL=${DEBUG_SQL:-0}
 
+LISTEN_PORT=${LISTEN_PORT:-"80"}
+
 if [ -z "$DB_PASSWORD" ]; then
     echo >&2 'Error: Missing DB_PASSWORD'
     exit 1
@@ -33,6 +35,11 @@ if [ -z "$ADMIN_PASSWORD" ]; then
     exit 1
 fi
 
+if [ "$LISTEN_PORT" != "80" ]; then
+    echo "Info: Customizing Apache Listen port to $LISTEN_PORT"
+    sed -i "s/80/$LISTEN_PORT/" /etc/apache2/ports.conf /etc/apache2/sites-available/000-default.conf
+fi
+
 # Check if database is available
 if [ -z "$DB_SOCK" ]; then
     until nc -z -v -w30 $DB_HOST $DB_PORT
diff --git a/4.0/apache/entrypoint.sh b/4.0/apache/entrypoint.sh
index 02a5149..1a90f29 100755
--- a/4.0/apache/entrypoint.sh
+++ b/4.0/apache/entrypoint.sh
@@ -27,6 +27,8 @@ URL_FORMAT=${URL_FORMAT:-'path'}
 DEBUG=${DEBUG:-0}
 DEBUG_SQL=${DEBUG_SQL:-0}
 
+LISTEN_PORT=${LISTEN_PORT:-"80"}
+
 if [ -z "$DB_PASSWORD" ]; then
     echo >&2 'Error: Missing DB_PASSWORD'
     exit 1
@@ -37,6 +39,11 @@ if [ -z "$ADMIN_PASSWORD" ]; then
     exit 1
 fi
 
+if [ "$LISTEN_PORT" != "80" ]; then
+    echo "Info: Customizing Apache Listen port to $LISTEN_PORT"
+    sed -i "s/80/$LISTEN_PORT/" /etc/apache2/ports.conf /etc/apache2/sites-available/000-default.conf
+fi
+
 # Check if database is available
 if [ -z "$DB_SOCK" ]; then
     until nc -z -v -w30 $DB_HOST $DB_PORT
diff --git a/README.md b/README.md
index 96f6f90..092aa54 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,8 @@ To change to Apache Webserver configuration, mount a Volume into the Container a
 
 See the example configuration provided.
 
+If you want to run Apache on a non-privileged port inside the container, just specify a environment variable `LISTEN_PORT` (e.g. `LISTEN_PORT=8080`).
+
 # Using the fpm Image
 
 To use the fpm image, you need an additional web server that can proxy http-request to the fpm-port of the container. See *docker-compose.fpm.yml* for example.
@@ -112,6 +114,7 @@ For further details on the settings see: https://manual.limesurvey.org/Data_encr
 | ENCRYPT_KEYPAIR  | Data encryption keypair                  |
 | ENCRYPT_PUBLIC_KEY | Data encryption public key             |
 | ENCRYPT_SECRET_KEY | Data encryption secret key             |
+| LISTEN_PORT     | Apache: Listen port. Default: 80          |
 
 For further details on the settings see: https://manual.limesurvey.org/Optional_settings#Advanced_Path_Settings