v0.1 version: added ci, container, nginx + base apigw config

data/etc/nginx/apigw_json_errors.conf

@@ -0,0 +1,11 @@
+error_page 400 = @400;
+location @400 { return 400 '{"status":400,"message":"Bad request"}\n'; }
+
+error_page 401 = @401;
+location @401 { return 401 '{"status":401,"message":"Unauthorized"}\n'; }
+
+error_page 403 = @403;
+location @403 { return 403 '{"status":403,"message":"Forbidden"}\n'; }
+
+error_page 404 = @404;
+location @404 { return 404 '{"status":404,"message":"Resource not found"}\n'; }