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Fix image's CMD after WORKDIR in Dockerfile

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This fix tries to fix 29667 where image's `CMD` is modified
after `WORKDIR` in Dockerfile.

The value of `b.runConfig.Cmd` was modified in the processing
of `WORKDIR`, in order to fix 28902. However, the same
`b.runConfig.Cmd` is passed to `commit()`.

This fix restored the `b.runConfig.Cmd` before `commit()`
the image for `WORKDIR`.

A test has been added.

This fix fixes 29667.

This fix is related to 28902, 28909, 28514.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit is contained in:
Yong Tang 2016-12-23 11:16:15 -08:00
parent b81f47a288
commit 0836023847
2 changed files with 45 additions and 5 deletions
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10
builder/dockerfile/dispatchers.go
View file

@ -297,17 +297,17 @@ func workdir(b *Builder, args []string, attributes map[string]bool, original str
}
b.runConfig.Image = b.image
cmd := b.runConfig.Cmd
b.runConfig.Cmd = strslice.StrSlice(append(getShell(b.runConfig), fmt.Sprintf("#(nop) WORKDIR %s", b.runConfig.WorkingDir)))
defer func(cmd strslice.StrSlice) { b.runConfig.Cmd = cmd }(cmd)
if hit, err := b.probeCache(); err != nil {
return err
} else if hit {
return nil
}
container, err := b.docker.ContainerCreate(types.ContainerCreateConfig{Config: b.runConfig})
// Actually copy the struct
workdirConfig := *b.runConfig
workdirConfig.Cmd = strslice.StrSlice(append(getShell(b.runConfig), fmt.Sprintf("#(nop) WORKDIR %s", b.runConfig.WorkingDir)))
container, err := b.docker.ContainerCreate(types.ContainerCreateConfig{Config: &workdirConfig})
if err != nil {
return err
}

40
integration-cli/docker_cli_build_test.go
View file

@ -7357,3 +7357,43 @@ func (s *DockerSuite) TestBuildWindowsEnvCaseInsensitive(c *check.C) {
c.Fatalf("Case insensitive environment variables on Windows failed. Got %s", res)
}
}
// Test case for 29667
func (s *DockerSuite) TestBuildWorkdirImageCmd(c *check.C) {
testRequires(c, DaemonIsLinux)
image := "testworkdirimagecmd"
dockerfile := `
FROM busybox
WORKDIR /foo/bar
`
out, err := buildImage(image, dockerfile, true)
c.Assert(err, checker.IsNil, check.Commentf("Output: %s", out))
out, _ = dockerCmd(c, "inspect", "--format", "{{ json .Config.Cmd }}", image)
c.Assert(strings.TrimSpace(out), checker.Equals, `["sh"]`)
image = "testworkdirlabelimagecmd"
dockerfile = `
FROM busybox
WORKDIR /foo/bar
LABEL a=b
`
out, err = buildImage(image, dockerfile, true)
c.Assert(err, checker.IsNil, check.Commentf("Output: %s", out))
out, _ = dockerCmd(c, "inspect", "--format", "{{ json .Config.Cmd }}", image)
c.Assert(strings.TrimSpace(out), checker.Equals, `["sh"]`)
}
// Test case for 28902/28090
func (s *DockerSuite) TestBuildWorkdirCmd(c *check.C) {
testRequires(c, DaemonIsLinux)
dockerFile := `
FROM golang:1.7-alpine
WORKDIR /
`
_, err := buildImage("testbuildworkdircmd", dockerFile, false)
c.Assert(err, checker.IsNil)
}