V0.7.0-rc2

What's Changed

• Icu by @Schmaetz in #16
• Fix major upgrade by @Schmaetz in #19
• added ENV to start pgbackrest repohost as runit service on pg pod by @Schmaetz in #21
• updates dockerfile by @Schmaetz in #22
• Pgbackrest server by @Schmaetz in #20
• Reduce container size by @Schmaetz in #24
• fix missing files for pg by @Schmaetz in #26

Full Changelog: v0.7.0-rc1...V0.7.0-rc2