completion v2: some small follow-ups

- Prevent completion on "create" subcommands to prevent them
  from completing with local filenames
- Add completion for "docker image save"
- Add completion for "docker image tag"
- Disable completion for "docker login"
- Exclude "paused" containers for "docker container attach" and
  "docker container exec"

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/command/service/create.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/completion"
 	cliopts "github.com/docker/cli/opts"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/swarm"
@@ -29,6 +30,7 @@ func newCreateCommand(dockerCli command.Cli) *cobra.Command {
 			}
 			return runCreate(dockerCli, cmd.Flags(), opts)
 		},
+		ValidArgsFunction: completion.NoComplete,
 	}
 	flags := cmd.Flags()
 	flags.StringVar(&opts.mode, flagMode, "replicated", "Service mode (replicated, global, replicated-job, or global-job)")