Upgrade from Postgres 17.6-alpine to 18.0-alpine fails

[majst01]

Description

Actual error is:

old cluster does not use data checksums but the new one does

Possible solutions to disable checksums:

• If that happens, remove your new data directory, and re-run the initdb command, this time WITHOUT the --data-checksums argument. One can always enable checksums later on.

• pg_checksums --disable --pgdata /var/lib/postgres/data

See: https://www.postgresql.org/docs/current/app-pgchecksums.html

[Gerrit91]

References #3.