Using memcached does not setup correctly

[patrickjahns]

When using the following environment variables

      - OWNCLOUD_MEMCACHED_ENABLED=true
      - OWNCLOUD_MEMCACHED_HOST=memcached

The configuration during boot process is not properly setup, since https://github.com/owncloud-docker/base/blob/master/rootfs/etc/owncloud.d/55-redis.sh will override (remove) the params again.

Log output:

owncloud_1   | Enabling memcached config...
owncloud_1   | System config value memcache.distributed set to string \OC\Memcache\Memcached
owncloud_1   | System config value memcache.locking set to string \OC\Memcache\Memcached
owncloud_1   | System config value memcached_servers set to string MEMCACHED
owncloud_1   | Disabling redis config...
owncloud_1   | System config value memcache.distributed deleted
owncloud_1   | System config value memcache.locking deleted
owncloud_1   | System config value redis deleted
owncloud_1   | Enabling file locking...

Relevant output of occ config:list

    "system": {
        "datadirectory": "\/mnt\/data\/files",
        "updatechecker": "false",
        "upgrade.disable-web": true,
        "apps_paths": [
            {
                "path": "\/var\/www\/owncloud\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/owncloud\/custom",
                "url": "\/custom",
                "writable": true
            }
        ],
        "dbtype": "mysql",
        "dbhost": "db:3306",
        "dbname": "owncloud",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "dbtableprefix": "oc_",
        "trusted_domains": [
            "localhost"
        ],
        "mysql.utf8mb4": true,
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "overwrite.cli.url": "http:\/\/localhost\/",
        "version": "10.0.6.1",
        "logtimezone": "UTC",
        "installed": true,
        "instanceid": "ocnraeq9ny4u",
        "filelocking.enabled": "true",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "loglevel": "2",
        "default_language": "en",
        "htaccess.RewriteBase": "\/",
        "memcached_servers": [
            "memcached",
            11211
        ]
    },

Expected behavior

memcache.distributed and memcache.locking stay configured with \OC\Memcache\Memcached

[tboerger]

Solved via #24