MergeVars merges two entity.EnvList lists, one from supfile and one from network, resolves the values of the environment variables with shell substitution, and returns the merged list of environment variables.

NewSupfile parses configuration file and returns Supfile or error.

NewTarStreamReader creates a tar stream reader from a local path.

ParseInitialArgs parses args and returns network and commands to be run.

ReadSupfile looks for Supfile or Supfiley.yml in the current working directory, cd's to Supfile dir, reads it and calls NewSupfile, after all returns the parsed Supfile.

RemoteTarCommand returns command to be run on remote SSH host to properly receive the created TAR stream.

ResolveLocalPath - Use bash to resolve $ENV_VARs.

SetEnvValues sets two (entity.EnvList)s with the values of the environment variables from initialArgs.EnvVars and returns one (entity.EnvList).