FROM golang:1.12-alpine

ENV TZ=Europe/Moscow
ENV TERM=xterm-color

ENV CGO_ENABLED=0
ENV GOOS=linux
ENV GOARCH=amd64
ENV GO111MODULE=on

ENV GOLANGCI=1.21.0
ENV GOSWAG=1.6.3

RUN \
  apk add --no-cache --update bash curl git tzdata && \
  rm -rf /var/cache/apk/*

RUN \
  cp /usr/share/zoneinfo/${TZ} /etc/localtime && \
  echo "${TZ}" > /etc/timezone && date

RUN \
  # install golangci-lint
  go get -u -v github.com/golangci/golangci-lint/cmd/golangci-lint@v${GOLANGCI} && \
  go install -ldflags "-X 'main.version=$(git describe --tags)' -X 'main.commit=$(git rev-parse --short HEAD)' -X 'main.date=$(date)'" github.com/golangci/golangci-lint/cmd/golangci-lint && \
  # install goswag
  go get -u -v github.com/swaggo/swag/cmd/swag@v${GOSWAG} && \
  go install github.com/swaggo/swag/cmd/swag && \
  # cleanup
  go clean -cache -modcache && \
  # print versions
  go version && \
  golangci-lint --version && \
  swag --version