plc: run dotenv before any other imports

This fixes, eg, logging configuration via .env variables.

packages/plc/src/bin.ts

@@ -1,15 +1,8 @@
-import dotenv from 'dotenv'
+import './env'
 import { Database } from './server/db'
 import PlcServer from './server'
 
 const run = async () => {
-  const env = process.env.ENV
-  if (env) {
-    dotenv.config({ path: `./.${env}.env` })
-  } else {
-    dotenv.config()
-  }
-
   const dbLoc = process.env.DATABASE_LOC
   const dbPostgresUrl = process.env.DB_POSTGRES_URL
 

packages/plc/src/env.ts

@@ -0,0 +1,9 @@
+// NOTE: this file should be imported first, particularly before `@atproto/common` (for logging), to ensure that environment variables are respected in library code
+import dotenv from 'dotenv'
+
+const env = process.env.ENV
+if (env) {
+  dotenv.config({ path: `./.${env}.env` })
+} else {
+  dotenv.config()
+}