Remove target-context flags

Signed-off-by: Ulysses Souza <ulysses.souza@docker.com>
Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>

Author: Ulysses Souza

README.md

@@ -188,23 +188,6 @@ $ docker app inspect myrepo/hello:0.1.0
 **Note**: Commands like `install`, `upgrade`, `render`, etc. can also be used
 directly on Application Packages that are in a registry.
 
-You can specify the Docker endpoint where an application is installed using a
-context and the `--target-context` option. If you do not specify one, it will
-use the currently active context.
-
-```console
-$ docker context create remote --description "remote cluster" --docker host=tcp://<remote-ip>:<remote-port>
-Successfully created context "remote"
-
-$ docker context ls
-NAME                DESCRIPTION                               DOCKER ENDPOINT               KUBERNETES ENDPOINT                ORCHESTRATOR
-default *           Current DOCKER_HOST based configuration   unix:///var/run/docker.sock   https://localhost:6443 (default)   swarm
-remote              remote cluster                            tcp://<remote-ip>:<remote-port>
-
-$ docker app install myrepo/hello:0.1.0 --target-context remote
-...
-```
-
 More examples are available in the [examples](examples) directory.
 
 ## CNAB

internal/commands/list.go

@@ -51,7 +51,6 @@ func listCmd(dockerCli command.Cli) *cobra.Command {
 			return runList(dockerCli, opts)
 		},
 	}
-	cmd.Flags().StringVar(&opts.targetContext, "target-context", "", "List running Apps on this context")
 
 	return cmd
 }

internal/commands/root.go

@@ -140,7 +140,6 @@ type credentialOptions struct {
 }
 
 func (o *credentialOptions) addFlags(flags *pflag.FlagSet) {
-	flags.StringVar(&o.targetContext, "target-context", "", "Context on which the application is installed (default: <current-context>)")
 	flags.StringArrayVar(&o.credentialsets, "credential-set", []string{}, "Use a YAML file containing a credential set or a credential set present in the credential store")
 	flags.StringArrayVar(&o.credentials, "credential", nil, "Add a single credential, additive ontop of any --credential-set used")
 	flags.BoolVar(&o.sendRegistryAuth, "with-registry-auth", false, "Sends registry auth")