Add podman secret create -d as alias for --driver for Docker compatibility

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

cmd/podman/secrets/create.go

@@ -46,7 +46,7 @@ func init() {
 
 	cfg := registry.PodmanConfig()
 
-	flags.StringVar(&createOpts.Driver, driverFlagName, cfg.Secrets.Driver, "Specify secret driver")
+	flags.StringVarP(&createOpts.Driver, driverFlagName, "d", cfg.Secrets.Driver, "Specify secret driver")
 	flags.StringToStringVar(&createOpts.DriverOpts, optsFlagName, cfg.Secrets.Opts, "Specify driver specific options")
 	_ = createCmd.RegisterFlagCompletionFunc(driverFlagName, completion.AutocompleteNone)
 	_ = createCmd.RegisterFlagCompletionFunc(optsFlagName, completion.AutocompleteNone)

docs/source/markdown/podman-secret-create.1.md

@@ -20,7 +20,7 @@ Secrets will not be committed to an image with `podman commit`, and will not be
 
 ## OPTIONS
 
-#### **--driver**=*driver*
+#### **--driver**, **-d**=*driver*
 
 Specify the secret driver (default **file**, which is unencrypted).
 

test/e2e/secret_test.go

@@ -40,7 +40,7 @@ var _ = Describe("Podman secret", func() {
 		err := ioutil.WriteFile(secretFilePath, []byte("mysecret"), 0755)
 		Expect(err).To(BeNil())
 
-		session := podmanTest.Podman([]string{"secret", "create", "--driver-opts", "opt1=val", "a", secretFilePath})
+		session := podmanTest.Podman([]string{"secret", "create", "-d", "file", "--driver-opts", "opt1=val", "a", secretFilePath})
 		session.WaitWithDefaultTimeout()
 		secrID := session.OutputToString()
 		Expect(session).Should(Exit(0))