diff --git a/.gitignore b/.gitignore
index adc0186..72b33d8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,9 @@
 .vscode
 node_modules/
 .env
-.env.mainnet
-.env.kovan
+.env.*
+!.env.*.example
+!.env.example
 kovan.*
 dump.rdb
 .idea
diff --git a/Dockerfile b/Dockerfile
index 86f4498..ba335e7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:12
+FROM node:14
 WORKDIR /app
 
 COPY package.json yarn.lock ./