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, 24 insertions, 0 deletions

diff --git a/cmd/podman/shared/prune.go b/cmd/podman/shared/prune.go
new file mode 100644
index 000000000..90cfe4475
--- /dev/null
+++ b/cmd/podman/shared/prune.go
@@ -0,0 +1,24 @@
+package shared
+
+import (
+	"fmt"
+	"github.com/pkg/errors"
+
+	"github.com/containers/libpod/libpod/image"
+)
+
+// Prune removes all unnamed and unused images from the local store
+func Prune(ir *image.Runtime) error {
+	pruneImages, err := ir.GetPruneImages()
+	if err != nil {
+		return err
+	}
+
+	for _, i := range pruneImages {
+		if err := i.Remove(true); err != nil {
+			return errors.Wrapf(err, "failed to remove %s", i.ID())
+		}
+		fmt.Println(i.ID())
+	}
+	return nil
+}