Updating to Alpine v3.16 & PHP8

[seancrites]

Updated image to use Alpine v3.16 & PHP8.

Interesting outcome is that the v3.16/php8 image is 12MB smaller than the previous v3.12/php7:

nagios-alpine312  latest       283177380089   4 minutes ago    216MB
nagios-alpine316  latest       a48db1ef3aaf   17 minutes ago   204MB

[manios]

Hi @seancrites ,

Unfortunately upgrading to Alpine 3.16 works only for amd64 architecture. All other architectures have a problem with time as you can see in the picture:

For more information you can read this: https://github.com/manios/docker-nagios/issues/35#issuecomment-945463377

The problem appears since Alpine 3.13. The musl-1.2 upgrade changed the definition of time_t to 64-bits on all arches. This affects armhf, armv7 and x86. See the musl time64 release notes and the wiki for more information.

At the moment NagiosEnterprises/nagioscore has not changed anything and I do not know how to migrate the Nagios code. I did some attempts by replacing

- include <sys/time.h>
+ include <compat/time32.h>

but in vain.

Any help from somebody with specific C++ knowledge on the matter would be appreciated.

Thanks, Christos