diff --git a/README.md b/README.md
index b5c561f..969f346 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@
 
 - ? what means mounted in "a file or directory on the host machine is mounted into a container" ?
 - ? why the volumes cannot be modify outside docker ?
+- ? `rm -rf /var/lib/apt/lists/*` ?
 
 ---
 ## nginx basics
@@ -65,6 +66,7 @@
 - [dangling images '<none>'](https://projectatomic.io/blog/2015/07/what-are-docker-none-none-images/)
 - [go inside docker to debug it](https://docs.docker.com/engine/reference/commandline/container_exec/)
 - `docker exec -ti <container-name> bash` to run bash inside a running container
+- [docker CMD vs ENTRYPOINT](https://phoenixnap.com/kb/docker-cmd-vs-entrypoint)
 
 	###### docker pid 1
 	- nginx by default will create some child process (a master and some workers), then it quits (doc ?)
@@ -128,3 +130,23 @@
 - [openssl req man](https://www.openssl.org/docs/man1.0.2/man1/openssl-req.html)
 - [SO discussion about ssl self signed certificate and becoming a CA](https://stackoverflow.com/questions/10175812/how-to-generate-a-self-signed-ssl-certificate-using-openssl)
 
+#### wordpress
+- [install wp](https://wordpress.org/support/article/how-to-install-wordpress/#detailed-instructions)
+- [install wp with wp-cli](https://make.wordpress.org/cli/handbook/how-to-install/)
+
+	###### install wp
+	- wget https://wordpress.org/latest.tar.gz
+	- tar -xzvf latest.tar.gz
+
+#### mariadb
+- [mariadb tutorial](https://www.mariadbtutorial.com/)
+- server vs client :
+	- "server" runs in the background and listen for inputs
+	- "client" interpret the commands to communicate with "server"
+- sudo apt install mariadb-client mariadb-server
+- [ERROR 1698 (28000): Access denied for user 'root'@'localhost'](https://stackoverflow.com/questions/39281594/error-1698-28000-access-denied-for-user-rootlocalhost)
+- [wiki ubuntu mariadb](https://doc.ubuntu-fr.org/mariadb)
+
+#### php-fpm
+- [](https://en.wikipedia.org/wiki/FastCGI)
+
diff --git a/srcs/requirements/mariadb/Dockerfile b/srcs/requirements/mariadb/Dockerfile
index e69de29..695b29d 100644
--- a/srcs/requirements/mariadb/Dockerfile
+++ b/srcs/requirements/mariadb/Dockerfile
@@ -0,0 +1,4 @@
+FROM debian:buster
+
+RUN apt update && apt install -y mariadb-client mariadb-server
+
diff --git a/srcs/requirements/nginx/Dockerfile b/srcs/requirements/nginx/Dockerfile
index e39a80e..a0ce1b7 100644
--- a/srcs/requirements/nginx/Dockerfile
+++ b/srcs/requirements/nginx/Dockerfile
@@ -1,9 +1,10 @@
+#FROM alpine:3.15
 FROM debian:buster
 
 RUN apt update && apt install -y nginx openssl
 
 # for debug
-RUN apt install -y procps vim
+#RUN apt install -y procps vim
 
 # create ssl certificate
 RUN openssl req -newkey rsa:2048 -nodes -x509 \
diff --git a/srcs/requirements/wordpress/Dockerfile b/srcs/requirements/wordpress/Dockerfile
new file mode 100644
index 0000000..f37198b
--- /dev/null
+++ b/srcs/requirements/wordpress/Dockerfile
@@ -0,0 +1,22 @@
+FROM debian:buster
+
+#RUN wget https://wordpress.org/latest.tar.gz ; tar -xzvf latest.tar.gz
+
+## for debug
+#RUN apt install -y procps vim
+#
+## create ssl certificate
+#RUN openssl req -newkey rsa:2048 -nodes -x509 \
+#	-keyout /etc/ssl/private/hulamy.42.fr.key -out /etc/ssl/certs/hulamy.42.fr.crt \
+#	-subj "/C=fr/ST=ile-de-france/L=paris/O=42/OU=inception/CN=hulamy.42.fr"
+#
+## import sites conf files
+#COPY ./conf/nginx.conf /etc/nginx/
+#COPY ./conf/inception_nginx.conf /etc/nginx/conf.d/
+#
+## for test
+#COPY ./conf/index.html /data/www/
+#COPY ./conf/https/index.html /data/wwws/
+#
+#CMD [ "nginx", "-g", "daemon off;" ]
+