diff --git a/docker.md b/docker.md
index a8f086a..bc513d0 100755
--- a/docker.md
+++ b/docker.md
@@ -1,23 +1,15 @@
 
 
-    docker build -t project/name .
-
-Run interactif:
-
-	docker run -it project/name bash
-
-
-Connection to an running container:
-
-	docker exec -it project/name bash
+- build: `docker build -t project/name .`
+- Run interactif: `docker run -it project/name bash`
+- Connection to an running container: `docker exec -it project/name bash`
+- remove untagged images: `docker rmi $(docker images -f "dangling=true" -q)`
 
 
 Inspection de docker
 --------------------
 
-Use dive
-
-    dive project/name (apt install dive)
+Use dive: `dive project/name (apt install dive)`