Update --compose-file flag description to mention stdin

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 2c7822b036)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/command/stack/deploy.go

@@ -58,7 +58,7 @@ func newDeployCommand(dockerCli command.Cli, common *commonOptions) *cobra.Comma
 	flags.StringVar(&opts.Bundlefile, "bundle-file", "", "Path to a Distributed Application Bundle file")
 	flags.SetAnnotation("bundle-file", "experimental", nil)
 	flags.SetAnnotation("bundle-file", "swarm", nil)
-	flags.StringSliceVarP(&opts.Composefiles, "compose-file", "c", []string{}, "Path to a Compose file")
+	flags.StringSliceVarP(&opts.Composefiles, "compose-file", "c", []string{}, `Path to a Compose file, or "-" to read from stdin`)
 	flags.SetAnnotation("compose-file", "version", []string{"1.25"})
 	flags.BoolVar(&opts.SendRegistryAuth, "with-registry-auth", false, "Send registry authentication details to Swarm agents")
 	flags.SetAnnotation("with-registry-auth", "swarm", nil)

contrib/completion/zsh/_docker

@@ -2209,7 +2209,7 @@ __docker_stack_subcommand() {
             _arguments $(__docker_arguments) \
                 $opts_help \
                 "($help)--bundle-file=[Path to a Distributed Application Bundle file]:dab:_files -g \"*.dab\"" \
-                "($help -c --compose-file)"{-c=,--compose-file=}"[Path to a Compose file]:compose file:_files -g \"*.(yml|yaml)\"" \
+                "($help -c --compose-file)"{-c=,--compose-file=}"[Path to a Compose file, or '-' to read from stdin]:compose file:_files -g \"*.(yml|yaml)\"" \
                 "($help)--with-registry-auth[Send registry authentication details to Swarm agents]" \
                 "($help -):stack:__docker_complete_stacks" && ret=0
             ;;

docs/reference/commandline/deploy.md

@@ -28,7 +28,7 @@ Aliases:
 
 Options:
       --bundle-file string    Path to a Distributed Application Bundle file
-      --compose-file string   Path to a Compose file
+      --compose-file string   Path to a Compose file, or "-" to read from stdin
       --help                  Print usage
       --prune                 Prune services that are no longer referenced
       --with-registry-auth    Send registry authentication details to Swarm agents

docs/reference/commandline/stack_deploy.md

@@ -25,7 +25,7 @@ Aliases:
 
 Options:
       --bundle-file string    Path to a Distributed Application Bundle file
-  -c, --compose-file strings  Path to a Compose file
+  -c, --compose-file strings  Path to a Compose file, or "-" to read from stdin
       --help                  Print usage
       --kubeconfig string     Kubernetes config file
       --namespace string      Kubernetes namespace to use