feat: complete dockerization (optional)

cmd/server/main.go

@@ -49,6 +49,7 @@ var envDefaults = map[string]string{
 	"AUTH_RATE_LIMIT_WINDOW_SECONDS": "60",
 	"TRUSTED_PROXIES":                "",
 	"UPDATE_FEED_URL":                "https://git.floriansylvain.fr",
+	"RENEWCMS_CONTAINER":             "false",
 }
 
 const versionFlag = "--version"