Adding ARG for setting golangci-lint version

Adds the GOLANGCI_LINT_VERSION ARG to the Dockerfile so it's easier to
maintain which version to use

Signed-off-by: Nick Adcock <[email protected]>

Author: zappy-shu

Dockerfile

@@ -1,11 +1,12 @@
 ARG GO_VERSION=1.13.7
+ARG GOLANGCI_LINT_VERSION=v1.23.6
 ARG ALPINE_VERSION=3.11.3
 
 
 
 FROM golang:${GO_VERSION} AS builder
 
-RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.23.6
+RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin ${GOLANGCI_LINT_VERSION}
 
 ARG MAKE_TARGET=all
 ENV CGO_ENABLED=0