File mysql.json of Package failed_orthanc-mysql

{
    /**
     * Configuration to use MySQL instead of the default SQLite
     * back-end of Orthanc. You will have to install the
     * "orthanc-postgresql" package to take advantage of this feature.
     **/
  "MySQL" : {
    "EnableIndex" : true,
    "EnableStorage" : false,
    "Host" : "localhost",    // For TCP connections (notably Windows)
    "Port" : 3306,           // For TCP connections (notably Windows)
    "UnixSocket" : "/var/run/mysqld/mysqld.sock",  // For UNIX on localhost
    "Database" : "orthanc",
    "Username" : "orthanc",
    "Password" : "orthanc",
    "Lock" : true            // See section about Locking
    }
}