automatically disable TTY if shell isn't a terminal

Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>

Author: ndeloof

cli/cmd/compose/exec.go

@@ -68,7 +68,7 @@ func execCommand(p *projectOptions, backend compose.Service) *cobra.Command {
 	runCmd.Flags().IntVar(&opts.index, "index", 1, "index of the container if there are multiple instances of a service [default: 1].")
 	runCmd.Flags().BoolVarP(&opts.privileged, "privileged", "", false, "Give extended privileges to the process.")
 	runCmd.Flags().StringVarP(&opts.user, "user", "u", "", "Run the command as this user.")
-	runCmd.Flags().BoolVarP(&opts.noTty, "", "T", false, "Disable pseudo-TTY allocation. By default `docker compose exec` allocates a TTY.")
+	runCmd.Flags().BoolVarP(&opts.noTty, "", "T", notAtTTY(), "Disable pseudo-TTY allocation. By default `docker compose exec` allocates a TTY.")
 	runCmd.Flags().StringVarP(&opts.workingDir, "workdir", "w", "", "Path to workdir directory for this command.")
 
 	runCmd.Flags().SetInterspersed(false)

cli/cmd/compose/run.go

@@ -24,6 +24,7 @@ import (
 
 	"github.com/compose-spec/compose-go/loader"
 	"github.com/compose-spec/compose-go/types"
+	"github.com/mattn/go-isatty"
 	"github.com/mattn/go-shellwords"
 	"github.com/spf13/cobra"
 
@@ -132,7 +133,7 @@ func runCommand(p *projectOptions, backend compose.Service) *cobra.Command {
 	flags.StringArrayVarP(&opts.environment, "env", "e", []string{}, "Set environment variables")
 	flags.StringArrayVarP(&opts.labels, "labels", "l", []string{}, "Add or override a label")
 	flags.BoolVar(&opts.Remove, "rm", false, "Automatically remove the container when it exits")
-	flags.BoolVarP(&opts.noTty, "no-TTY", "T", false, "Disable pseudo-noTty allocation. By default docker compose run allocates a TTY")
+	flags.BoolVarP(&opts.noTty, "no-TTY", "T", notAtTTY(), "Disable pseudo-noTty allocation. By default docker compose run allocates a TTY")
 	flags.StringVar(&opts.name, "name", "", " Assign a name to the container")
 	flags.StringVarP(&opts.user, "user", "u", "", "Run as specified username or uid")
 	flags.StringVarP(&opts.workdir, "workdir", "w", "", "Working directory inside the container")
@@ -147,6 +148,10 @@ func runCommand(p *projectOptions, backend compose.Service) *cobra.Command {
 	return cmd
 }
 
+func notAtTTY() bool {
+	return !isatty.IsTerminal(os.Stdout.Fd())
+}
+
 func runRun(ctx context.Context, backend compose.Service, project *types.Project, opts runOptions) error {
 	err := opts.apply(project)
 	if err != nil {