small changes in readme

README.md

@@ -55,6 +55,7 @@
 - [run without sudo on linux](https://docs.docker.com/engine/install/linux-postinstall/)
 
 #### docker :
+
 - [docker starter guide](https://docs.docker.com/get-started/)
 - [docker glossaire](https://docs.docker.com/glossary/)
 - [Dockerfile syntaxe](https://docs.docker.com/engine/reference/builder/)
@@ -63,6 +64,7 @@
 - [build context and image context](https://stackoverflow.com/questions/55108649/what-is-app-working-directory-for-a-dockerfile/55109065#55109065)
 
 	**docker pid 1**
+
 	- nginx by default will create some child process (a master and some workers), then it quits (doc ?)
 	- when the first process of a docker container exit, the container exit (doc ?)
 	- so we must tell nginx to not go background : "-g 'daemon off'"
@@ -74,6 +76,7 @@
 	- ["By design, containers started in detached mode exit when the root process used to run the container exits"](https://docs.docker.com/engine/reference/run/#detached--d)
 
 	**install and use docker and compose**
+
 	- [how to install docker engine](https://docs.docker.com/engine/install/ubuntu/)
 	- [github releases](https://github.com/docker/compose/releases)
 	- [install last version of compose manually](https://docs.docker.com/compose/install/compose-plugin/#install-the-plugin-manually)
@@ -107,10 +110,12 @@
 		- volumes are only modifiable by docker, they don't need an absolut path, and they are not dependent of host architecture
 
 #### nginx
+
 - [nginx begginer guide](https://hub.docker.com/_/nginx/)
 - [nginx all directives for conf file](https://nginx.org/en/docs/dirindex.html)
 
 #### openssl
+
 - [openssl faq](https://www.openssl.org/docs/faq.html)
 - [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)