feat(go-swagger): Allow generate launcher makefile and readme. Refactoring

templates/go-swagger/launcher.sh.tmpl

@@ -0,0 +1,41 @@
+#!/bin/sh
+
+# the launcher file will launch the correct app / worker based on the given env variable
+# the main goal of that launcher is to be used as a Docker entrypoint
+# APP_TYPE: Can be api or worker
+
+case "$APP_TYPE" in
+{{ if eq (len .APIs) 1 }}
+    # API
+    api) exec /app/{{ (index .APIs 0).Binary }} ;;
+{{ else if gt (len .APIs) 1 }}
+    {{range .APIs}} 
+    # API {{.Name}}
+    {{.Name}}) exec /app/{{.Binary}} ;;
+    {{end}}
+{{end}}
+
+{{- if ne (len .Workers) 0 }}
+    # Workers
+    worker)
+        case "$WORKER_NAME" in
+
+    {{range .Workers}} 
+            # Worker {{.Name}}
+            {{.Name}}) exec /app/{{.Binary}} ;;
+    {{end}}
+
+            # otherwise
+            *)
+                echo "** invalid WORKER_NAME='$WORKER_NAME'. Please use a valid worker name!"
+                exit 1
+                ;;
+        esac
+    ;;
+{{end}}
+    # otherwise
+    *)
+        echo "** invalid APP_TYPE='$APP_TYPE' ! Please use API or WORKER!"
+        exit 1
+        ;;
+esac