Build OpenWRT and flash/upgrade devices

cryobry a4a1d46251 Official containers are not updated often enough to be useful -- abandon %!s(int64=5) %!d(string=hai) anos
.atom-build.yml fbe8e21972 Initial commit %!s(int64=5) %!d(string=hai) anos
.gitignore 252cd4e3a5 Update .gitignore %!s(int64=5) %!d(string=hai) anos
README.md 2ed7b2d879 Add README %!s(int64=5) %!d(string=hai) anos
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openwrtBuild fbe8e21972 Initial commit %!s(int64=5) %!d(string=hai) anos

README.md

See openwrtBuild --help or openwrtContainerBuild --help for options.