Add ability to prune containers and images

Allow user to prune unused/unnamed images, the layer images from building,
via podman rmi --prune.

Allow user to prune stopped/exiuted containers via podman rm --prune.

This should resolve #1910

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/cmd/podman/images_prune.go b/cmd/podman/images_prune.go
new file mode 100644
index 000000000..cb72a498f
--- /dev/null
+++ b/cmd/podman/images_prune.go
@@ -0,0 +1,34 @@
+package main
+
+import (
+	"github.com/containers/libpod/cmd/podman/libpodruntime"
+	"github.com/containers/libpod/cmd/podman/shared"
+	"github.com/pkg/errors"
+	"github.com/urfave/cli"
+)
+
+var (
+	pruneImagesDescription = `
+	podman image prune
+
+	Removes all unnamed images from local storage
+`
+
+	pruneImagesCommand = cli.Command{
+		Name:         "prune",
+		Usage:        "Remove unused images",
+		Description:  pruneImagesDescription,
+		Action:       pruneImagesCmd,
+		OnUsageError: usageErrorHandler,
+	}
+)
+
+func pruneImagesCmd(c *cli.Context) error {
+	runtime, err := libpodruntime.GetRuntime(c)
+	if err != nil {
+		return errors.Wrapf(err, "could not get runtime")
+	}
+	defer runtime.Shutdown(false)
+
+	return shared.Prune(runtime.ImageRuntime())
+}