Update dependencies in Dockerfile
-FROM golang:1.12-alpine3.9 as build-env
+FROM golang:1.13-alpine3.10 as build-env
RUN apk update && \
- apk add --no-cache make ca-certificates git && \
+ apk add --no-cache make ca-certificates git mercurial && \
update-ca-certificates
WORKDIR $GOPATH/src/github.com/kedacore/keda
