Don't remove deps directory

src/mad.erl

@@ -25,8 +25,7 @@ main(Args) ->
         [] ->
             ok;
         Deps ->
-            mad_utils:exec("mkdir", ["-p", mad_deps:path()]),
-            mad_utils:exec("rm", ["-rf", "deps"]),
+            mad_utils:exec("mkdir", ["-p", mad_deps:container()]),
             mad_utils:exec("mkdir", ["-p", "deps"]),
             mad_deps:clone(Deps)
     end.