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* docker entrypoint: DRY store log backup
Don't Repeat Yourself
Set a variable for the full path to the source file.
Create the backup path by appending an extension from `date` output.
Also fixed quoting and switched to an `if` block.
Clean up block level variables.
* docker entrypoint: use ISO 8601 format
The previous format discards information about the local time zone.
* docker entrypoint: always use UTC
Now the format always ends in +00:00, and we can ignore that part again.
* docker entrypoint: provide the date format again
* docker entrypoint: remove time zone from the date format
* docker entrypoint: use an unambiguous date format
Present a leading zero before the month:
YYYY-0MM-DD
Both YYYY-MM-DD and YYYY-DD-MM are used by people and can be confusing in the beginning of the month.
* docker entrypoint: use appropriate quoting
Without avoiding field splitting a password containing a space changes the number of arguments being set.
* docker entrypoint: use explicit braces for custom variables
Make the intentions clear and don't assume the user knows the special cases for when variables won't be extended.
Example:
word=animal
words=mistake
echo "$words vs $word vs ${word}s"
* docker entrypoint-xftp-server: braces and quoting
* docker entrypoint-xftp-server: backup block
* docker entrypoints: explain date format in a comment
* switched from long to short option to date for POSIX
* docker entrypoint-smp-server: explain date format
* docker entrypoint-xftp-server: explain date format
* docker entrypoints: further explain format
I fixed the case to match the date format letters.
Also, use words to explain since I don't want everyone to need to read about date formats to understand.
* docker entrypoints: only quote letters
I was either going to quote the dashes too or stop quoting the colons.
Having less quotes was more readable.
* Revert "docker entrypoint: use an unambiguous date format"
This reverts commit ba2a93bad9.
* docker entrypoints: remove %F
* docker entrypoint-smp-server: remove %F
Used part of the explicit ISO 8601 format,
provided by the coreutils date invocation guide.
* docker entrypoint-xftp-server: remove %F
Used part of the explicit ISO 8601 format,
provided by the coreutils date invocation guide.