opts: ParseRestartPolicy: improve validation of max restart-counts

Use the new container.ValidateRestartPolicy utility to verify if a max-restart-count
is allowed for the given restart-policy.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

cli/command/container/opts_test.go

@@ -714,6 +714,10 @@ func TestParseRestartPolicy(t *testing.T) {
 				Name: container.RestartPolicyDisabled,
 			},
 		},
+		{
+			input:       "no:1",
+			expectedErr: "invalid restart policy: maximum retry count cannot be used with restart policy 'no'",
+		},
 		{
 			input:       ":1",
 			expectedErr: "invalid restart policy format: no policy provided before colon",
@@ -725,11 +729,8 @@ func TestParseRestartPolicy(t *testing.T) {
 			},
 		},
 		{
-			input: "always:1",
-			expected: container.RestartPolicy{
-				Name:              container.RestartPolicyAlways,
-				MaximumRetryCount: 1,
-			},
+			input:       "always:1",
+			expectedErr: "invalid restart policy: maximum retry count cannot be used with restart policy 'always'",
 		},
 		{
 			input:       "always:2:3",
@@ -752,6 +753,10 @@ func TestParseRestartPolicy(t *testing.T) {
 				Name: container.RestartPolicyUnlessStopped,
 			},
 		},
+		{
+			input:       "unless-stopped:1",
+			expectedErr: "invalid restart policy: maximum retry count cannot be used with restart policy 'unless-stopped'",
+		},
 		{
 			input:       "unless-stopped:invalid",
 			expectedErr: "invalid restart policy format: maximum retry count must be an integer",

opts/parse.go

@@ -92,5 +92,8 @@ func ParseRestartPolicy(policy string) (container.RestartPolicy, error) {
 	}
 
 	p.Name = container.RestartPolicyMode(k)
+	if err := container.ValidateRestartPolicy(p); err != nil {
+		return container.RestartPolicy{}, err
+	}
 	return p, nil
 }