move magic strings to constants
move magic strings to constants

docker-exec/dexec,JKrag/dexec,docker-exec/dexec,docker-exec/dexec,docker-exec/dexec,johnnyeric/dexec,johnnyeric/dexec,johnnyeric/dexec,docker-exec/dexec,johnnyeric/dexec,docker-exec/dexec,docker-exec/dexec,johnnyeric/dexec,docker-exec/dexec,docker-exec/dexec,docker-exec/dexec,johnnyeric/dexec,johnnyeric/dexec,docker-exec/dexec,johnnyeric/dexec,johnnyeric/dexec,johnnyeric/dexec,docker-exec/dexec,johnnyeric/dexec,johnnyeric/dexec,docker-exec/dexec,johnnyeric/dexec