* Upgrade postgres-backup-s3 to psql 17
The upstream `go-crond` repo now uses `main` as it's base branch, so the
tag name changed.
* postgres-backup-s3: honor extra opts in pg_dumpall
The setting was being used in `psql`, but not when POSTGRES_BACKUP_ALL
is set.
* Fix: postgres-backup-s3 crontab syntax
It was yielding an error "user lookup failed: user: unknown user
/bin/sh"
* Update alpine from 3.9 to 3.15
This adds support for PostgreSQL 14
* Fix missing python packages
* Install aws-cli as package
* Installing the PostgreSQL client is sufficient
- Bump alpine from 3.9 to 3.11
- Add Postgres v12 support (Fixes#115)
- Add multiple or all databases backup (Fixes#10)
- S3_PREFIX can be empty (Fixes#59)
- Add missing Documentation (Fixes#87)