baseimage

minimalist docker base image to build and deploy my services and applications.

Two images included:

1. go build image - umputun/baseimage:buildgo-latest. For build stage, includes go compiler and linters. Alpine based.
2. base application image umputun/baseimage:app-latest

Go Build Image

Image umputun/baseimage:buildgo-latest intends to be used in multi-stage Dockefile to build go applications and services.

• Relatively small, based on the official golang:alpine image
• Enforces CGO_ENABLED=0 and GOARCH=amd64
• Adds vendor tool dep and govendor
• With fully installed and ready to use linters gometalinter and golangci-lint
• Add useful packages for building and testing - testify, mockery and go-bindata
• With goveralls for easy integration with coverage services and provided coverage.sh script to report coverage.
• git-rev.sh script to make git-based version without full .git copied (works without .git/objects)

Example of Dockerfile from baseimage:buildgo

ROM umputun/baseimage:buildgo-latest as build-backend

WORKDIR /go/src/github.com/umputun/remark

ADD app /go/src/github.com/umputun/remark/app
ADD vendor /go/src/github.com/umputun/remark/vendor
ADD .git /go/src/github.com/umputun/remark/.git

RUN cd app && go test ./...

RUN gometalinter --disable-all --deadline=300s --vendor --enable=vet --enable=vetshadow --enable=golint \
    --enable=staticcheck --enable=ineffassign --enable=goconst --enable=errcheck --enable=unconvert \
    --enable=deadcode  --enable=gosimple --enable=gas --exclude=test --exclude=mock --exclude=vendor ./...

RUN mkdir -p target && /script/coverage.sh

RUN \
    version=$(/script/git-rev.sh) && \
    echo "version $version" && \  
    go build -o remark -ldflags "-X main.revision=${version} -s -w" ./app

Base Application Image

Image umputun/baseimage:app-latest designed as a lightweight, ready-to-use base for various services. It adds a few things to the regular alpine image.

• ENTRYPOINT /init.sh runs CMD via dumb-init
• Optionally runs /srv/init.sh if provided by custom container
• Packages tzdata, curl and openssl
• Runs CMD under app user (uid=1001)