diff --git a/README.md b/README.md
index b7208eb..ac6d032 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ A simple, fully translatable admin interface and frontend for `sabre/dav` based
 
 # Requirements
 
-PHP > 7.3.0, MySQL (or MariaDB).
+PHP > 7.3.0 (with `pdo_mysql` and `intl` extensions), MySQL (or MariaDB).
 
 # Installation
 
@@ -188,10 +188,12 @@ You can start the containers with :
 
     docker exec -it davis bash -c "APP_ENV=prod bin/console migrate --no-interaction"
 
-Then, head up to <YOUR_DOCKER_IP> to see the status display :
+Then, head up to `http://<YOUR_DOCKER_IP>` to see the status display :
 
 ![Status page](https://raw.githubusercontent.com/tchapi/davis/master/_screenshots/status.png)
 
+> Note that there is no user, no principals, etc created by default.
+
 # Development
 
 You can spin off a local PHP webserver with:
diff --git a/docker/Dockerfile b/docker/Dockerfile
index c69a870..5425083 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,5 +1,7 @@
 FROM php:7.3-fpm
 
+LABEL maintainer="tchap@tchap.me"
+
 # Mail : configuration for ssmtp
 ARG email
 ARG mail_host
diff --git a/docker/configurations/davis.conf b/docker/configurations/davis.conf
index 6187c6c..1e83652 100644
--- a/docker/configurations/davis.conf
+++ b/docker/configurations/davis.conf
@@ -1,4 +1,8 @@
-# This is a very simple / naive configuration for Davis
+# This is a very simple / naive configuration for nginx + Davis
+#
+# USE HTTPS IN PRODUCTION
+#
+
 upstream docker-davis {
     server davis:9000;
 }
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 7892ffe..be07620 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -3,7 +3,7 @@ version: "3.7"
 services:
 
   nginx:
-    image: nginx:alpine
+    image: nginx:1.17.5-alpine
     container_name: nginx
     env_file: .env
     command: "/bin/sh -c 'while :; do sleep 6h & wait $${!}; nginx -s reload; done & nginx -g \"daemon off;\"'"
@@ -18,7 +18,7 @@ services:
       - 80:80
 
   mysql:
-    image: mariadb:latest
+    image: mariadb:10.4.10
     container_name: mysql
     env_file: .env