SYS-699 add lightweight msmtp agent; add BIND_IP option for garage - #302
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Summary of Changes
Email server is an attack surface that is unnecessary on infra servers (fileservers, k8s workers etc). Provide msmtp, a client-only alternative to postfix.
This also adds a bind-ip parameter for launching garage S3-compatible server under docker-compose (to put it behind a VPN, for example).
Housekeeping tweaks:
Why is this change being made?
General security improvements.
How was this tested? How can the reviewer verify your testing?
Manual testing
Completion checklist