diff --git a/Dockerfile b/Dockerfile
index 8dbe1af..de4ac84 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,16 +4,10 @@ MAINTAINER hardware <https://github.com/hardware>
 
 ARG VERSION=v0.1.0-beta.5
 
-ENV GID=991 \
-    UID=991 \
-    DB_HOST=mariadb \
-    DB_USER=flarum \
-    DB_NAME=flarum
+ENV GID=991 UID=991
 
 RUN echo "@testing https://nl.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories \
-    && export BUILD_DEPS="git" \
-    && apk --no-cache add ${BUILD_DEPS} \
-      nginx \
+    && apk --no-cache add nginx \
       curl \
       supervisor \
       mariadb-client \
@@ -30,22 +24,22 @@ RUN echo "@testing https://nl.alpinelinux.org/alpine/edge/testing" >> /etc/apk/r
       php7-session@testing \
     && cd /tmp \
     && ln -s /usr/bin/php7 /usr/bin/php \
-    # && curl -s http://getcomposer.org/installer | php \
-    # && mv /tmp/composer.phar /usr/bin/composer \
-    # && chmod +x /usr/bin/composer \
+    && curl -s http://getcomposer.org/installer | php \
+    && mv /tmp/composer.phar /usr/bin/composer \
+    && chmod +x /usr/bin/composer \
     && mkdir -p /flarum/app \
     && addgroup -g ${GID} flarum && adduser -h /flarum -s /bin/sh -D -G flarum -u ${UID} flarum \
     && chown -R flarum:flarum /flarum \
-    && su-exec flarum:flarum git clone https://github.com/hardware/flarum-src.git /flarum/app
-    # && su-exec flarum:flarum composer create-project flarum/flarum /flarum/app $VERSION --stability=beta \
-    # && composer clear-cache \
-    # && rm -rf /flarum/.composer
+    && su-exec flarum:flarum composer create-project flarum/flarum /flarum/app $VERSION --stability=beta \
+    && composer clear-cache \
+    && rm -rf /flarum/.composer /var/cache/apk/*
 
 COPY config.sql /flarum/app/config.sql
 COPY nginx.conf /etc/nginx/nginx.conf
 COPY php-fpm.conf /etc/php7/php-fpm.conf
 COPY supervisord.conf /etc/supervisor/supervisord.conf
 COPY startup /usr/local/bin/startup
+
 RUN chmod +x /usr/local/bin/startup
 
 VOLUME /flarum/www
diff --git a/README.md b/README.md
index a60e4ba..36db49f 100644
--- a/README.md
+++ b/README.md
@@ -18,8 +18,8 @@ Flarum is the next-generation forum software that makes online discussion fun. I
 
 ### Environment variables
 
-- **GID** = vmail user id (*optional*, default: 991)
-- **UID** = vmail user id (*optional*, default: 991)
+- **GID** = Flarum user id (*optional*, default: 991)
+- **UID** = Flarum group id (*optional*, default: 991)
 - **FORUM_URL** = Forum URL (**required**)
 - **DB_HOST** = MariaDB instance ip/hostname (*optional*, default: mariadb)
 - **DB_USER** = MariaDB database username (*optional*, default: flarum)
@@ -47,6 +47,39 @@ MAIL_PASS = xxxxxxxx
 
 * /flarum/www : Flarum directory
 
+### Installation
+
+```
+docker pull mondedie/flarum
+
+mkdir -p ~/.config/flarum
+touch ~/.config/flarum/.env
+chmod 600 ~/.config/flarum/.env
+```
+
+Create an `.env` file with your environment variables
+
+```bash
+# vim ~/.config/flarum/.env
+
+UID=991                              # Optional
+GID=991                              # Optional
+
+FORUM_URL=https://forum.domain.tld/  # Required
+
+DB_HOST=mariadb                      # Optional
+DB_NAME=flarum                       # Optional
+DB_USER=flarum                       # Optional
+DB_PASS=yyyyyyyy                     # Required
+
+MAIL_FROM=noreply@domain.tld         # Optional
+MAIL_HOST=mail.domain.tld            # Optional
+MAIL_PORT=465                        # Optional
+MAIL_ENCR=ssl                        # Optional
+MAIL_USER=admin@domain.tld           # Optional
+MAIL_PASS=xxxxxxxx                   # Optional
+```
+
 ### Docker-compose
 
 #### Docker-compose.yml
@@ -55,17 +88,9 @@ MAIL_PASS = xxxxxxxx
 flarum:
   image: flarum
   container_name: mondedie/flarum
+  env_file: ~/.config/flarum/.env
   links:
     - mariadb:mariadb
-  environment:
-    - DB_PASS=yyyyyyyy
-    - FORUM_URL=https://forum.domain.tld/
-    - MAIL_FROM=noreply@domain.tld
-    - MAIL_HOST=mail.domain.tld
-    - MAIL_PORT=465
-    - MAIL_USER=noreply@domain.tld
-    - MAIL_PASS=zzzzzzzz
-    - MAIL_ENCR=ssl
   volumes:
     - /mnt/docker/flarum:/flarum/www
 
@@ -87,6 +112,10 @@ mariadb:
 docker-compose up -d
 ```
 
+### Reverse proxy example
+
+https://github.com/mondediefr/flarum/wiki/Reverse-proxy-example
+
 ### Default account
 
 * **Username** : *admin*
@@ -95,3 +124,7 @@ docker-compose up -d
 ### Configuration file
 
 The main configuration file is located here : **/mnt/docker/flarum/app/config.php**
+
+### Screenshot
+
+![flarum](https://i.imgur.com/teqg3od.pngP)
diff --git a/startup b/startup
index 412bd89..f1807cc 100644
--- a/startup
+++ b/startup
@@ -1,5 +1,16 @@
 #!/bin/sh
 
+# Env variables
+export DB_HOST
+export DB_USER
+export DB_NAME
+
+# Default values
+DB_HOST=${DB_HOST:-mariadb}
+DB_USER=${DB_USER:-flarum}
+DB_NAME=${DB_NAME:-flarum}
+
+# Required env variables
 if [ -z "$DB_PASS" ]; then
   echo "[ERROR] Mariadb database password must be set !"
   exit 1
@@ -68,4 +79,4 @@ fi
 chown -R flarum:flarum /flarum/www
 
 # RUN !
-supervisord -c /etc/supervisor/supervisord.conf
+exec supervisord -c /etc/supervisor/supervisord.conf