Apq/s6-overlay: 辅助创建可运行多个程序(“干一件事”)的Docker镜像 @ v3

spogulis no https://github.com/just-containers/s6-overlay.git

Laurent Bercot 67f756b250 requirements typo fix		3 gadi atpakaļ
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howto.txt	2b5298d2a2 Initial commit for s6-overlay v3.	3 gadi atpakaļ
init.txt	2b5298d2a2 Initial commit for s6-overlay v3.	3 gadi atpakaļ
requirements.txt	67f756b250 requirements typo fix	3 gadi atpakaļ