closes #1 Now, wicopa is dockerized..

ROADMAP.md

 ** ROADMAP ideas **
 
-  - Dockerize Wicopa (except database ?) / issue [#1](https://gitlab.mbb.univ-montp2.fr/jlopez/wicopa/issues/1),
   - Recode in PHP the update codes for package managers / issue [#2](https://gitlab.mbb.univ-montp2.fr/jlopez/wicopa/issues/2),
   - Create a session / user table. Connect and bind to LDAP,
   - Create an history by user session,
   - Give the possibility to users to share their recipes (when these recipes are validated ?) by adding some other tags (docker's metadatas, singularity's LABELs),
-  - Give the possibility to browse shared recipes by tags,
+  - Give the possibility to browse the recipes shared using keywords,
   - Give the possibility to launchs Diffs between recipes,
   - Code import from Dockerhub, quay.io, SingularityHub... / issue [#4](https://gitlab.mbb.univ-montp2.fr/jlopez/wicopa/issues/4),