Just go with one environment variable

src/Vegasco-Web/webserver.conf.template

@@ -1,24 +1,8 @@
-map "write-something-here-so-it-is-not-empty" ${DOLLAR}httpsUrl {
-    default "${services__Api__https__0}";
-}
-
-map "write-something-here-so-it-is-not-empty" ${DOLLAR}httpUrl {
-    default "${services__Api__http__0}";
-}
-
-map ${DOLLAR}httpUrl ${DOLLAR}apiUrl {
-    ~(.+) ${DOLLAR}1;
-}
-
-map ${DOLLAR}httpsUrl ${DOLLAR}apiUrl {
-    ~(.+) ${DOLLAR}1;
-}
-
 server {
     listen 80;
 
     location ~ ^/api/(.*) {
-        proxy_pass ${DOLLAR}apiUrl/${DOLLAR}1;
+        proxy_pass ${apiUrl}/${DOLLAR}1;
     }
 
     location / {