Make postgres connection string also a ENV var

server/db/pg/driver.ts

@@ -7,9 +7,22 @@ function createDb() {
     const config = readConfigFile();
 
     if (!config.postgres) {
-        throw new Error(
+        // check the environment variables for postgres config
-            "Postgres configuration is missing in the configuration file."
+        if (process.env.POSTGRES_CONNECTION_STRING) {
-        );
+            config.postgres = {
+                connection_string: process.env.POSTGRES_CONNECTION_STRING
+            };
+            if (process.env.POSTGRES_REPLICA_CONNECTION_STRINGS) {
+                const replicas = process.env.POSTGRES_REPLICA_CONNECTION_STRINGS.split(",").map((conn) => ({
+                    connection_string: conn.trim()
+                }));
+                config.postgres.replicas = replicas;
+            }
+        } else {
+            throw new Error(
+                "Postgres configuration is missing in the configuration file."
+            );
+        }
     }
 
     const connectionString = config.postgres?.connection_string;

server/lib/readConfigFile.ts

@@ -150,7 +150,7 @@ export const configSchema = z
         }),
         postgres: z
             .object({
-                connection_string: z.string(),
+                connection_string: z.string().optional(),
                 replicas: z
                     .array(
                         z.object({