diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..e22c910
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,13 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2022 Антон Аксенов <anthonyaxenov@gmail.com>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
diff --git a/Makefile b/Makefile
index c433337..5f89fe3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# Autogenerated at 04.07.2022 23:25 using ./gen-makefile.sh
+# Autogenerated at 04.07.2022 23:52 using ./gen-makefile.sh
 
 ##lamp: Apache + php + mariadb
 lamp: apache php mariadb
diff --git a/README.md b/README.md
index d589ac8..ff841cd 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,13 @@ where:
 * `mypack*` is the pack name
 * `goal*` are script names in `./install`
 
-## Testing in docker
+## Testing in docker (not recommended)
+
+> Note that this is almost useless way to test since you'll meet errors in many cases because dockerized OS is not fully-functional and will never be.
+> 
+> You can use docker to test something **really simple**, e.g. to check general script steps or install cli tools.
+>
+> In other cases you need virtualized Ubuntu instead of dockerized one, so I strongly recommend you to use [VirtualBox](https://www.virtualbox.org/wiki/Downloads) or your host machine.
 
 ```shell
 # switch to repo dir
@@ -85,8 +91,12 @@ cd my-env
 # build and run container 
 docker build -t myenv . && docker run -it myenv
 
-# oneliner
+# or oneliner
 docker run -it $(docker build -q .)
 ```
 
 Now you can play around with scripts.
+
+## License
+
+[WTFPLv2](LICENSE)
diff --git a/gen-makefile.sh b/gen-makefile.sh
index 1c8d5cb..b1bcb10 100755
--- a/gen-makefile.sh
+++ b/gen-makefile.sh
@@ -21,7 +21,7 @@ help: Makefile
 	@echo "Usage:"
 	@echo "\tmake <goal>\n"
 	@echo "Available goals:"
-	@sed -n 's/^##//p' $< | column -t -s ':' |  sed -e "s/^/\t/"
+	@sed -n 's/^##//p' \$< | column -t -s ':' |  sed -e "s/^/\t/"
 
 ##<goal>_: Same as 'cat ./install/<goal>'
 %_: