Add || exit 1 to HEALTHCHECK to map cURL exit codes and Docker possible values

[JoshuaLicense]

Description:
This PR maps any returned cURL exit codes to possible values for the Docker HEALTHCHECK instruction.

Docker HEALTHCHECK instruction possible values:

The command's exit status indicates the health status of the container. The possible values are:

0: success - the container is healthy and ready for use
1: unhealthy - the container isn't working correctly
2: reserved - don't use this exit code

Source: https://docs.docker.com/engine/reference/builder/#healthcheck

cURL exit codes: https://everything.curl.dev/cmdline/exitcode

[TrafeX]

Hi @JoshuaLicense ,

Good catch! The current way does work (I've had unhealthy containers), but it's not correct.
Merged! 🎉