I don't have any issue, but much more a question actually:
Is it possible to run armv7l binaries on a armv6l OS ?
Because this is what it looks like on rpi1 devices:
$ docker run -it --rm hypriot/rpi-mysql mysql --version
mysql Ver 14.14 Distrib 5.5.60, for debian-linux-gnu (armv7l) using readline 6.2
$ docker run -it --rm hypriot/rpi-mysql uname -a
Linux f2e6f925ce19 4.9.59+ #1047 Sun Oct 29 11:47:10 GMT 2017 armv6l GNU/Linux