fix docker build under windows

Author: RomanLut

.gitattributes

@@ -10,4 +10,4 @@
 Makefile text
 *.bat eol=crlf
 *.txt text
-*.sh text
+*.sh text eol=lf

docs/development/Building in Docker.md

@@ -23,12 +23,14 @@ Where `<TARGET>` must be replaced with the name of the target that you want to b
 ## Windows 10
 
 Docker on Windows requires full paths for mounting volumes in `docker run` commands. For example: `c:\Users\pspyc\Documents\Projects\inav` becomes `//c/Users/pspyc/Documents/Projects/inav` .
+If you are getting error "standard_init_linux.go:219: exec user process caused: no such file or directory", make sure `\cmake\docker.sh` has lf (not crlf) line endings.
 
 You'll have to manually execute the same steps that the build script does:
 
 1. `docker build -t inav-build .`
    + This step is only needed the first time.
-2. `docker run --rm -it -v <PATH_TO_REPO>:/src inav-build <TARGET>`
+2. `docker run --rm -it -u root -v <PATH_TO_REPO>:/src inav-build <TARGET>`
    + Where `<PATH_TO_REPO>` must be replaced with the absolute path of where you cloned this repo (see above), and `<TARGET>` with the name of the target that you want to build.
+   + Note that on Windows/WSL 2 mounted /src folder is writeable for root user only. You have to run build under root user. You can achieve this by using `-u root` option in the command line above, or by removing "USER inav" line from the .\DockerFile before building image.   
 
 Refer to the [Linux](#Linux) instructions or the [build script](/build.sh) for more details.