rosco v1.8.1
06b2900 chore(dockerfile): upgrade to latest alpine image (backport #894) (#896)
53c6666 fix(ci): fetch previous tag from git instead of API (#877) (#880)
ca97d32 chore(ci): Mergify - merge Autobumps on release-* (#878) (#882)
fed26a5 fix(halyard): Use Halyard's spinnaker.yml defined Redis (#874) (#876)