PowerDNS v4.6.2

What's Changed

• Updated base image to debian bullseye
• Updated PowerDNS Authoritative Server to version 4.6.2
• Fix issue when using docker-compose file version 2 and up
• Fix MySQL check if PDNSCONF_GMYSQL_HOST is not "mysql" (thanks @icedream!)
• Install powerdns keyring directly to trusted.gpg.d. (thanks @icedream!)
• Install mysql schema from package instead of supplying ourselves. (thanks @icedream!)
• Added drone CI config
• Added busybox to aid in service healthcheck and debugging