Merge branch 'add-python' into 'master'

arch-self-contained/Dockerfile

centos7-32bit-self-contained/Dockerfile

centos7-32bit-system-dependencies/Dockerfile

centos7-self-contained/Dockerfile

centos7-system-dependencies/Dockerfile

code-style-check/Dockerfile

debian-self-contained-aarch64/Dockerfile

debian-self-contained-armhf/Dockerfile

debian-self-contained/Dockerfile

debian-system-dependencies-armhf/Dockerfile

debian-system-dependencies/Dockerfile

deploy/Dockerfile

ubuntu-self-contained/Dockerfile

ubuntu-system-dependencies/Dockerfile

windows-32bit-cross/Dockerfile

windows-64bit-cross/Dockerfile