Fix web-app reference to web-api docs

cmd/web-api/Dockerfile

@@ -42,6 +42,19 @@ ARG code_path=./cmd/${name}
 ARG commit_ref=-
 ARG swagInit
 
+ARG name
+ARG code_path=./cmd/${name}
+ARG commit_ref=-
+
+ARG name
+ENV SERVICE_NAME $name
+
+ARG env="dev"
+ENV ENV $env
+
+ARG gogc="20"
+ENV GOGC $gogc
+
 # Copy shared packages.
 COPY internal ./internal
 

cmd/web-app/Dockerfile

@@ -25,6 +25,15 @@ ARG name
 ARG code_path=./cmd/${name}
 ARG commit_ref=-
 
+ARG name
+ENV SERVICE_NAME $name
+
+ARG env="dev"
+ENV ENV $env
+
+ARG gogc="20"
+ENV GOGC $gogc
+
 # Copy shared packages.
 COPY internal ./internal
 

cmd/web-app/handlers/root.go

@@ -56,7 +56,7 @@ func (h *Root) SitePage(ctx context.Context, w http.ResponseWriter, r *http.Requ
 		tmpName = "site-api.gohtml"
 
 		// http://127.0.0.1:3001/docs/doc.json
-		swaggerJsonUrl := h.ProjectRoute.ApiDocsJson()
+		swaggerJsonUrl := h.ProjectRoute.ApiDocsJson(true)
 
 		// Load the json file from the API service.
 		res, err := pester.Get(swaggerJsonUrl)

docker-compose.yaml

@@ -85,7 +85,7 @@ services:
       - configs/.env_docker_compose
     environment:
       - WEB_APP_HTTP_HOST=:3000
-      - WEB_APP_APP_BASE_URL=http://127.0.0.1:3000
+      - WEB_APP_APP_BASE_URL=http://localhost:3000
       - WEB_APP_APP_DEBUG_HOST=:4000
       - WEB_APP_REDIS_HOST=redis:6379
       - WEB_APP_DB_HOST=postgres:5432
@@ -93,7 +93,8 @@ services:
       - WEB_APP_DB_PASS=postgres
       - WEB_APP_DB_DATABASE=shared
       - WEB_APP_DB_DISABLE_TLS=true
-      - WEB_API_BASE_URL=http://web-api:3001
+      - WEB_API_BASE_URL=http://localhost:3001
+      - USE_NETWORK_ALIAS=1
       - DD_TRACE_AGENT_HOSTNAME=datadog
       - DD_TRACE_AGENT_PORT=8126
       - DD_SERVICE_NAME=web-app
@@ -125,7 +126,7 @@ services:
       - configs/.env_docker_compose
     environment:
       - WEB_API_HTTP_HOST=:3001
-      - WEB_API_APP_BASE_URL=http://127.0.0.1:3001
+      - WEB_API_APP_BASE_URL=http://localhost:3001
       - WEB_API_APP_DEBUG_HOST=:4001
       - WEB_API_REDIS_HOST=redis:6379
       - WEB_API_DB_HOST=postgres:5432
@@ -133,7 +134,8 @@ services:
       - WEB_API_DB_PASS=postgres
       - WEB_API_DB_DATABASE=shared
       - WEB_API_DB_DISABLE_TLS=true
-      - WEB_APP_BASE_URL=http://web-app:3000
+      - WEB_APP_BASE_URL=http://localhost:3000
+      - USE_NETWORK_ALIAS=1
       - DD_TRACE_AGENT_HOSTNAME=datadog
       - DD_TRACE_AGENT_PORT=8126
       - DD_SERVICE_NAME=web-app

internal/project_route/project_routes.go

@@ -1,8 +1,12 @@
 package project_route
 
 import (
+	"fmt"
 	"github.com/pkg/errors"
+	"net"
 	"net/url"
+	"os"
+	"strings"
 )
 
 type ProjectRoute struct {
@@ -58,8 +62,18 @@ func (r ProjectRoute) ApiDocs() string {
 	return u.String()
 }
 
-func (r ProjectRoute) ApiDocsJson() string {
+func (r ProjectRoute) ApiDocsJson(internal bool) string {
 	u := r.webApiUrl
+
+	if ev := os.Getenv("USE_NETWORK_ALIAS"); ev != "" {
+		if internal && strings.Contains(u.Host, ":") {
+			h, p, _ := net.SplitHostPort(u.Host)
+			if h == "127.0.0.1" || h == "localhost" {
+				u.Host = fmt.Sprintf("web-api:%s", p)
+			}
+		}
+	}
+
 	u.Path = "/docs/doc.json"
 	return u.String()
 }