stat /python3-android/docker-build.sh: no such file or directory: unknown.  build.sh is also having issues. 1) No command named autoreconf. Fixes with sudo apt-get install autoconf 2) No Module named dataclasses Fixes with installing python3.9 (dataclasses was introduced in python 3.7) 3) Finally getting this error now. 
stat /python3-android/docker-build.sh: no such file or directory: unknown.

build.sh is also having issues.