Add lock file to prevent simultaneous deployment. This closes #2
Add lock file to prevent simultaneous deployment. This closes #2

RitwikGupta/picoCTF-shell-manager,cganas/picoCTF-shell-manager,picoCTF/picoCTF-shell-manager,picoCTF/picoCTF-shell-manager,RitwikGupta/picoCTF-shell-manager,cganas/picoCTF-shell-manager,cganas/picoCTF-shell-manager,RitwikGupta/picoCTF-shell-manager,picoCTF/picoCTF-shell-manager,picoCTF/picoCTF-shell-manager,cganas/picoCTF-shell-manager,RitwikGupta/picoCTF-shell-manager