support attaching to containers

pkg/commands/container.go

@@ -2,6 +2,7 @@ package commands
 
 import (
 	"context"
+	"os/exec"
 	"strings"
 
 	"github.com/docker/docker/api/types"
@@ -19,6 +20,7 @@ type Container struct {
 	Container     types.Container
 	DisplayString string
 	Client        *client.Client
+	OSCommand     *OSCommand
 }
 
 // GetDisplayStrings returns the dispaly string of Container
@@ -74,3 +76,9 @@ func (c *Container) Stop() error {
 func (c *Container) Restart() error {
 	return c.Client.ContainerRestart(context.Background(), c.ID, nil)
 }
+
+// Attach attaches the container
+func (c *Container) Attach() *exec.Cmd {
+	cmd := c.OSCommand.PrepareSubProcess("docker", "attach", "--sig-proxy=false", c.ID)
+	return cmd
+}

pkg/commands/docker.go

@@ -61,6 +61,7 @@ func (c *DockerCommand) GetContainers() ([]*Container, error) {
 			ServiceName: serviceName,
 			Container:   container,
 			Client:      c.Client,
+			OSCommand:   c.OSCommand,
 		}
 	}
 

pkg/gui/containers_panel.go

@@ -384,3 +384,18 @@ func (gui *Gui) handleContainerRestart(g *gocui.Gui, v *gocui.View) error {
 		return gui.refreshContainers()
 	})
 }
+
+func (gui *Gui) handleContainerAttach(g *gocui.Gui, v *gocui.View) error {
+	container, err := gui.getSelectedContainer(g)
+	if err != nil {
+		return nil
+	}
+
+	subProcess := container.Attach()
+	if subProcess != nil {
+		gui.SubProcess = subProcess
+		return gui.Errors.ErrSubProcess
+	}
+
+	return nil
+}

pkg/gui/keybindings.go

@@ -172,6 +172,13 @@ func (gui *Gui) GetInitialKeybindings() []*Binding {
 			Handler:     gui.handleContainerRestart,
 			Description: gui.Tr.SLocalize("restartContainer"),
 		},
+		{
+			ViewName:    "containers",
+			Key:         'a',
+			Modifier:    gocui.ModNone,
+			Handler:     gui.handleContainerAttach,
+			Description: gui.Tr.SLocalize("attachContainer"),
+		},
 	}
 
 	// TODO: add more views here

pkg/i18n/english.go

@@ -806,5 +806,9 @@ func addEnglish(i18nObject *i18n.Bundle) error {
 			ID:    "nextContext",
 			Other: "next context",
 		},
+		&i18n.Message{
+			ID:    "attachContainer",
+			Other: "attach to container",
+		},
 	)
 }