Fixing docker host default (#548)

* Prefer defaultHost

* no null

* fixing tests

* port as well

src/Microsoft.Tye.Hosting/Model/Application.cs

@@ -148,13 +148,8 @@ namespace Microsoft.Tye.Hosting.Model
             foreach (var b in service.Description.Bindings)
             {
                 var protocol = b.Protocol;
-                var host = b.Host ?? (isDockerRunInfo ? service.Description.Name : defaultHost);
-
+                var host = b.Host ?? defaultHost ?? (isDockerRunInfo ? service.Description.Name : "");
                 var port = b.Port;
-                if (b.Port is object && isDockerRunInfo)
-                {
-                    port = b.ContainerPort ?? b.Port.Value;
-                }
 
                 bindings.Add(new EffectiveBinding(
                     service.Description.Name,

test/E2ETest/testassets/projects/health-checks/tye-liveness.yaml

@@ -5,8 +5,6 @@ services:
   - name: health-liveness
     project: api/api.csproj
     replicas: 3
-    bindings:
-      - port: 8002
     liveness:
       http:
         path: /healthy

test/E2ETest/testassets/projects/health-checks/tye-none.yaml

@@ -5,6 +5,4 @@ services:
   - name: health-none
     project: api/api.csproj
     replicas: 3
-    bindings:
-      - port: 8001
   

test/E2ETest/testassets/projects/health-checks/tye-proxy.yaml

@@ -5,8 +5,6 @@ services:
   - name: health-proxy
     project: api/api.csproj
     replicas: 2
-    bindings:
-      - port: 8005
     liveness:
       http:
         path: /healthy

test/E2ETest/testassets/projects/health-checks/tye-readiness.yaml

@@ -5,8 +5,6 @@ services:
   - name: health-readiness
     project: api/api.csproj
     replicas: 3
-    bindings:
-      - port: 8003
     readiness:
       http:
         path: /ready