} else if _, err := exec.Command("docker", "info").CombinedOutput(); err != nil {
c.Skip("skipping docker tests because docker is not available")
}
+
tmpdir := c.MkDir()
defer os.RemoveAll(tmpdir)
err := os.Chmod(tmpdir, 0755)
cmd = exec.Command("go", "run", ".",
"testinstall",
"-package-dir", tmpdir,
+ "-package-version", "1.2.3~rc4",
)
cmd.Stdout = os.Stderr
cmd.Stderr = os.Stderr