feat: remove NEXT_PUBLIC env vars from docker build args (#13)

* feat: add next public envs to runtime

* Commit env vars

apps/web/src/pages/api/stripe/create_checkout_session.ts

@@ -1,4 +1,5 @@
 import type { NextApiRequest, NextApiResponse } from "next";
+import { env } from "next-runtime-env";
 import { z } from "zod";
 
 import { createNextApiContext } from "@kan/api/trpc";
@@ -73,8 +74,8 @@ export default async function handler(
           quantity: 1,
         },
       ],
-      success_url: `${process.env.NEXT_PUBLIC_BASE_URL}${successUrl}`,
-      cancel_url: `${process.env.NEXT_PUBLIC_BASE_URL}${cancelUrl}`,
+      success_url: `${env("NEXT_PUBLIC_BASE_URL")}${successUrl}`,
+      cancel_url: `${env("NEXT_PUBLIC_BASE_URL")}${cancelUrl}`,
       customer: user.stripeCustomerId ?? undefined,
       metadata: {
         workspaceSlug: slug,