{create,run} --replace

Add a `--replace` flag to the `container {create,run}` commands.
If another container with the same name already exists, it will
be replaced and removed.

Adding this flag is motivated by #5485 to make running Podman in systemd
units (or any other scripts/automation) more robust.  In case of a
crash, a container may not be removed by a sytemd unit anymore.  The
`--replace` flag allows for supporting crashes.

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

2 files changed, 30 insertions, 0 deletions

diff --git a/test/e2e/create_test.go b/test/e2e/create_test.go
index b9a1ff83d..822e470f2 100644
--- a/test/e2e/create_test.go
+++ b/test/e2e/create_test.go
@@ -429,4 +429,19 @@ var _ = Describe("Podman create", func() {
 		Expect(len(data)).To(Equal(1))
 		Expect(data[0].HostConfig.NanoCpus).To(Equal(int64(nanoCPUs)))
 	})
+
+	It("podman create --replace", func() {
+		// Make sure we error out with --name.
+		session := podmanTest.Podman([]string{"create", "--replace", ALPINE, "/bin/sh"})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(125))
+
+		// Create and replace 5 times in a row the "same" container.
+		ctrName := "testCtr"
+		for i := 0; i < 5; i++ {
+			session = podmanTest.Podman([]string{"create", "--replace", "--name", ctrName, ALPINE, "/bin/sh"})
+			session.WaitWithDefaultTimeout()
+			Expect(session.ExitCode()).To(Equal(0))
+		}
+	})
 })
diff --git a/test/e2e/run_test.go b/test/e2e/run_test.go
index 59215c7e5..76944b3db 100644
--- a/test/e2e/run_test.go
+++ b/test/e2e/run_test.go
@@ -931,4 +931,19 @@ USER mail`
 		session.WaitWithDefaultTimeout()
 		Expect(session.ExitCode()).To(Equal(0))
 	})
+
+	It("podman run --replace", func() {
+		// Make sure we error out with --name.
+		session := podmanTest.Podman([]string{"create", "--replace", ALPINE, "/bin/sh"})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(125))
+
+		// Run and replace 5 times in a row the "same" container.
+		ctrName := "testCtr"
+		for i := 0; i < 5; i++ {
+			session := podmanTest.Podman([]string{"run", "--detach", "--replace", "--name", ctrName, ALPINE, "/bin/sh"})
+			session.WaitWithDefaultTimeout()
+			Expect(session.ExitCode()).To(Equal(0))
+		}
+	})
 })