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container-commit: support --squash to squash layers into one

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Allow users to commit containers into a single layer.

Usage
```bash
podman container commit --squash <name>
```

Signed-off-by: Aditya R <arajan@redhat.com>
This commit is contained in:
Aditya R
2022-02-22 22:10:34 +05:30
parent 0cfb5d7e75
commit fbbcb957c7
12 changed files with 53 additions and 1 deletions
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18
test/e2e/commit_test.go
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@ -4,6 +4,7 @@ import (
"io/ioutil"
"os"
"path/filepath"
"strings"
. "github.com/containers/podman/v4/test/utils"
. "github.com/onsi/ginkgo"
@ -133,6 +134,23 @@ var _ = Describe("Podman commit", func() {
Expect(foundBlue).To(Equal(true))
})
It("podman commit container with --squash", func() {
test := podmanTest.Podman([]string{"run", "--name", "test1", "-d", ALPINE, "ls"})
test.WaitWithDefaultTimeout()
Expect(test).Should(Exit(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
session := podmanTest.Podman([]string{"commit", "--squash", "test1", "foobar.com/test1-image:latest"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
session = podmanTest.Podman([]string{"inspect", "--format", "{{.RootFS.Layers}}", "foobar.com/test1-image:latest"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// Check for one layers
Expect(strings.Fields(session.OutputToString())).To(HaveLen(1))
})
It("podman commit container with change flag and JSON entrypoint with =", func() {
test := podmanTest.Podman([]string{"run", "--name", "test1", "-d", ALPINE, "ls"})
test.WaitWithDefaultTimeout()