add expose-as option

fixes: #204

* add expose-as option

Author: aastein

_docs/deployment.yml

@@ -46,10 +46,8 @@ services:
     depends-on:
       - service: db-pool
     expose:
-      - port: 80
-        to:
-          - global: true
       - port: 443
+        as: 8080
         to:
           - global: true
 

sdl/v1.go

@@ -25,6 +25,7 @@ type v1Service struct {
 
 type v1Expose struct {
 	Port  uint32
+	As    uint32
 	Proto string       `yaml:",omitempty"`
 	To    []v1ExposeTo `yaml:",omitempty"`
 }
@@ -180,10 +181,11 @@ func (sdl *v1) Manifest() (*types.Manifest, error) {
 			for _, expose := range svc.Expose {
 				for _, to := range expose.To {
 					msvc.Expose = append(msvc.Expose, &types.ManifestServiceExpose{
-						Service: to.Service,
-						Port:    expose.Port,
-						Proto:   expose.Proto,
-						Global:  to.Global,
+						Service:      to.Service,
+						Port:         expose.Port,
+						ExternalPort: expose.As,
+						Proto:        expose.Proto,
+						Global:       to.Global,
 					})
 				}
 			}