Expand configuration (#368)

* Allow configuring httpMaxConns

default: 100

* Allow setting NITTER_CONF_FILE path env var

Co-authored-by: 3nprob <3nprob@3nprob>

src/nitter.nim

@@ -1,6 +1,7 @@
 import asyncdispatch, strformat
 from net import Port
 from htmlgen import a
+from os import getEnv
 
 import jester
 
@@ -12,7 +13,7 @@ import routes/[
 
 const instancesUrl = "https://github.com/zedeus/nitter/wiki/Instances"
 
-const configPath {.strdefine.} = "./nitter.conf"
+let configPath = getEnv("NITTER_CONF_FILE", "./nitter.conf")
 let (cfg, fullCfg) = getConfig(configPath)
 
 when defined(release):
@@ -28,7 +29,7 @@ updateDefaultPrefs(fullCfg)
 setCacheTimes(cfg)
 setHmacKey(cfg.hmacKey)
 setProxyEncoding(cfg.base64Media)
-setMaxHttpConns(100)
+setMaxHttpConns(cfg.httpMaxConns)
 
 waitFor initRedisPool(cfg)
 stdout.write &"Connected to Redis at {cfg.redisHost}:{cfg.redisPort}\n"