bump go version in docker

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.6.1] - 2022-04-14
+
+### Fixed
+
+- Bump go version in docker file to 18.
+
 ## [1.6.0] - 2022-04-14
 
 ### Added

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.17-alpine as builder
+FROM golang:1.18-alpine as builder
 
 WORKDIR /app
 COPY go.* .