diff --git a/dev/build/docker-dev/README.md b/dev/build/docker-dev/README.md
index bb5c82391f1..111d9f6b941 100644
--- a/dev/build/docker-dev/README.md
+++ b/dev/build/docker-dev/README.md
@@ -1,8 +1,9 @@
 # How to use it ?
 
-The docker-compose.yml file is a sample of a config file to use to build and run Dolibarr in the current workspace with Docker.
-This docker image is intended for development usage.
-For production usage you should consider other contributor reference like https://hub.docker.com/r/dolibarr/dolibarr 
+The docker-compose.yml file is a sample of a config file to use to build and run
+Dolibarr in the current workspace with Docker. This docker image is intended for
+**development usage**. For production usage you should consider other
+contributor reference like https://hub.docker.com/r/dolibarr/dolibarr.
 
 Before build/run, define the variable HOST_USER_ID as following:
 
@@ -26,9 +27,11 @@ The URL to go to PhpMyAdmin is (login/password is root/root) :
 
         http://0.0.0.0:8080
 
-In Dolibarr configuration Email let PHP mail function, To see all mail send by Dolibarr go to maildev
+In Dolibarr configuration Email let PHP mail function, To see all mail send by
+Dolibarr go to maildev
 
         http://0.0.0.0:8081
 
-Setup the database connection during the installation process, please use mariadb (name of the database container) as database host.
-Setup documents folder, during the installation process, to /var/documents
+Setup the database connection during the installation process, please use
+mariadb (name of the database container) as database host. Setup documents
+folder, during the installation process, to /var/documents.
diff --git a/dev/build/docker-dev/docker-run.sh b/dev/build/docker-dev/docker-run.sh
index 7b78b2b1e65..a3a1123c1f2 100755
--- a/dev/build/docker-dev/docker-run.sh
+++ b/dev/build/docker-dev/docker-run.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 # Script used by the Dockerfile.
 # See README.md to know how to create a Dolibarr env with docker
+set -ex
 
 if [ "${HOST_USER_ID}" == "" ]; then
 	echo "Define HOST_USER_ID to your user ID before starting"
@@ -14,6 +15,7 @@ echo "[docker-run] => update '${PHP_INI_DIR}/conf.d/dolibarr-php.ini'"
 cat <<EOF > "${PHP_INI_DIR}/conf.d/dolibarr-php.ini"
 date.timezone = ${PHP_INI_DATE_TIMEZONE:-UTC}
 memory_limit = ${PHP_INI_MEMORY_LIMIT:-256M}
+display_errors = Off
 EOF
 
 exec apache2-foreground