handle files of any path

[Guiorgy]

$ ./vackup export mosquitto_config mosquitto_config.tar.gz
mosquitto_config
./
./mosquitto.conf
Successfully tar'ed volume mosquitto_config into file 'mosquitto_config.tar.gz'
$ ls
mosquitto_config.tar.gz  vackup
$ mkdir test1
$ ./vackup export mosquitto_config test1/mosquitto_config.tar.gz
mosquitto_config
./
./mosquitto.conf
Successfully tar'ed volume mosquitto_config into file 'mosquitto_config.tar.gz'
$ ls test1/
mosquitto_config.tar.gz
$ mkdir test2
$ ./vackup export mosquitto_config ./test2/mosquitto_config.tar.gz
mosquitto_config
./
./mosquitto.conf
Successfully tar'ed volume mosquitto_config into file 'mosquitto_config.tar.gz'
$ ls test2
mosquitto_config.tar.gz
$ mkdir test3
$ ./vackup export mosquitto_config /home/user/directory/test3/mosquitto_config.tar.gz
mosquitto_config
./
./mosquitto.conf
Successfully tar'ed volume mosquitto_config into file 'mosquitto_config.tar.gz'
$ ls test3
mosquitto_config.tar.gz
$ ./vackup export mosquitto_config /home/user/mosquitto_config.tar.gz
mosquitto_config
./
./mosquitto.conf
Successfully tar'ed volume mosquitto_config into file 'mosquitto_config.tar.gz'
$ ls
[...] mosquitto_config.tar.gz

[BretFisher]

Hey @Guiorgy, if you can fix merge conflicts, I'll accept. Thanks for the help!

[Guiorgy]

@BretFisher Should I also deal with the linter errors?

[BretFisher]

looks great, merged!