feat: add support for cap_add and cap_drop compose keys (#238)

pkg/client/compose/service.go

@@ -43,6 +43,8 @@ func ServiceSpecFromCompose(project *types.Project, serviceName string) (api.Ser
 
 	spec := api.ServiceSpec{
 		Container: api.ContainerSpec{
+			CapAdd:     service.CapAdd,
+			CapDrop:    service.CapDrop,
 			Command:    service.Command,
 			Entrypoint: service.Entrypoint,
 			Env:        env,

pkg/client/compose/service_test.go

@@ -100,6 +100,8 @@ func TestServiceSpecFromCompose(t *testing.T) {
 					Name: "test",
 					Mode: api.ServiceModeReplicated,
 					Container: api.ContainerSpec{
+						CapAdd:     []string{"NET_ADMIN"},
+						CapDrop:    []string{"ALL"},
 						Command:    []string{"nginx", "updated", "command"},
 						Entrypoint: []string{"/updated-docker-entrypoint.sh"},
 						Env: map[string]string{

pkg/client/compose/testdata/compose-full-spec.yaml

@@ -1,5 +1,9 @@
 services:
   test:
+    cap_add:
+      - NET_ADMIN
+    cap_drop:
+      - ALL
     command: ["nginx", "updated", "command"]
     cpus: 0.5
     entrypoint: ["/updated-docker-entrypoint.sh"]