container-{create,run}: add `--pod-id-file`

Allow containers to join an existing pod via the `--pod-id-file` which
is already supported by a number of `podman-pod` subcommands.  Also add
tests to make sure it's working and to prevent future regressions.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

1 files changed, 0 insertions, 23 deletions

diff --git a/cmd/podman/pods/common.go b/cmd/podman/pods/common.go
deleted file mode 100644
index 1c4195095..000000000
--- a/cmd/podman/pods/common.go
+++ /dev/null
@@ -1,23 +0,0 @@
-package pods
-
-import (
-	"io/ioutil"
-	"strings"
-
-	"github.com/pkg/errors"
-)
-
-// readPodIDFiles reads the specified files and returns their content (i.e.,
-// first line).
-func readPodIDFiles(files []string) ([]string, error) {
-	ids := []string{}
-	for _, podFile := range files {
-		content, err := ioutil.ReadFile(podFile)
-		if err != nil {
-			return nil, errors.Wrap(err, "error reading pod ID file")
-		}
-		id := strings.Split(string(content), "\n")[0]
-		ids = append(ids, id)
-	}
-	return ids, nil
-}