/etc/supervisor/conf.d/memcache.conf

Confirm this exists now

output of echo "stats settings" | nc localhost 11211

supervisorctl status

Yay!!!!

Can you tell me the command you used to build and update the image? Also, what is the CLI version ? It should be 4.5.2.

$ cloudron --version
4.5.2

Aug 31 14:29:58 PHP Warning: PHP Startup: Unable to load dynamic library 'memcache' (tried: /usr/lib/php/20180731/memcache (/usr/lib/php/20180731/memcache: cannot open shared object file: No such file or directory), /usr/lib/php/20180731/memcache.so (/usr/lib/php/20180731/memcache.so: cannot open shared object file: No such file or directory)) in Unknown on line 0

So does this mean the memcache server is not properly installed ?

So far: postgresql and memcached servers available - OK;
Missing: php-memcached extension (so I can't make use of the memcached server capabilities within a php script) - not OK

Please also don't forget about nginx x-accel, can you add an entry to the nginx conf file for that?

Not sure how to proceed

And I did the build and the install from this branch.

I probably did something wrong tho since memcached is not even running and the test put in place by the devs goes like this :
Fatal error: Uncaught Error: Class 'Memcached' not found in /app/data/public/index.php:24 Stack trace: #0 {main} thrown in /app/data/public/index.php on line 24

if (!$connection = pg_connect ("host=".getenv("CLOUDRON_POSTGRESQL_HOST")." dbname=". getenv("CLOUDRON_POSTGRESQL_DATABASE") ." user=" . getenv("CLOUDRON_POSTGRESQL_USERNAME")." password=" .getenv("CLOUDRON_POSTGRESQL_PASSWORD") ."")) {
    $error = error_get_last();
    echo "Connection to the PostgreSQL database failed. Error was: ". $error['message']. "\n";
} else {
    echo "Connected to the PostgreSQL database.\n";
}

print_r(get_loaded_extensions());

$memcached = new Memcached();
$memcached->addServer('172.18.0.158', 11211);

phpinfo();
exit;

?>

root@659d2867-1273-4c51-b7e7-765edf705c2d:/app/data# supervisorctl status
apache2                          RUNNING   pid 19, uptime 1 day, 22:13:15
cron                             RUNNING   pid 18, uptime 1 day, 22:13:15

root@dfa78176-bd47-44ed-9d07-3e66265886b7:/app/data# supervisorctl status
apache2                          RUNNING   pid 22, uptime 0:00:15
cron                             RUNNING   pid 21, uptime 0:00:15
memcached                        RUNNING   pid 20, uptime 0:00:15
root@dfa78176-bd47-44ed-9d07-3e66265886b7:/app/data# echo "stats settings" | nc localhost 11211
STAT maxbytes 67108864
STAT maxconns 1024
STAT tcpport 11211
STAT udpport 0
STAT inter 127.0.0.1
STAT verbosity 0
....

Do I need to make this test under a specific user perhaps ?

One you install the app, memcached is running on port 11211 on localhost. You can test this with:

root@a95330af-2470-45e7-a7cb-fe170bd184ed:/app/data# echo "stats settings" | nc localhost 11211
STAT maxbytes 67108864
STAT maxconns 1024
STAT tcpport 11211
STAT udpport 0
STAT inter 127.0.0.1
STAT verbosity 0
STAT oldest 0
STAT evictions on
STAT domain_socket NULL
STAT umask 700
STAT growth_factor 1.25