Feat support security fsgroup (#1613)

* feat: support security context fsgroup

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

* test: add unit test to security group fsgroup

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

* test: add functional test to security group fsgroup

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

* docs: add documentation of the new label of security group fsgroup

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

---------

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

pkg/loader/compose/compose.go

@@ -705,6 +705,8 @@ func parseKomposeLabels(labels map[string]string, serviceConfig *kobject.Service
 			}
 
 			serviceConfig.ServiceExternalTrafficPolicy = serviceExternalTypeTrafficPolicy
+		case LabelSecurityContextFsGroup:
+			serviceConfig.FsGroup = cast.ToInt64(value)
 		case LabelServiceExpose:
 			serviceConfig.ExposeService = strings.Trim(strings.ToLower(value), " ,")
 		case LabelNodePortPort:

pkg/loader/compose/utils.go

@@ -79,6 +79,8 @@ const (
 
 	// ServiceTypeHeadless ...
 	ServiceTypeHeadless = "Headless"
+	// LabelSecurityContextFsGroup defines the pod FsGroup
+	LabelSecurityContextFsGroup = "kompose.security-context.fsgroup"
 )
 
 // load environment variables from compose file