Update exercices.md

home/exercices.md

@@ -6,8 +6,9 @@ Preliminary setup
 
 Prepare and launch the docker container:
 
-    HOST_DIR=/home/kevin/gdb.py_debug_data/ # absolute path required ; create it manually before
-    docker run -it -v $HOST_DIR:/home/gdb.py/host -e GROUPID=$(id -g) -e USERID=$(id -u) --cap-add sys_ptrace kpouget/tuto-gdb.py
+    HOST_DIR=/$HOME/gdb.py_data/ # absolute path required ; create it manually before
+    DOCKER_OPT="-v $HOST_DIR:/home/gdb.py/host -e GROUPID=$(id -g) -e USERID=$(id -u) --cap-add sys_ptrace"
+    docker run -it $DOCKER_OPT kpouget/tuto-gdb.py
 
 Then if you want to share the data with your host, work from `~/host`, otherwise stay in `~`: