Dockerfile

# Build stage
ARG GO_VERSION=1.10
ARG PROJECT_PATH=/go/src/github.com/indeedsecurity/docker-operator
FROM golang:${GO_VERSION}-alpine AS builder
RUN apk --update add ca-certificates
RUN apk add --no-cache git
ADD https://github.com/golang/dep/releases/download/v0.4.1/dep-linux-amd64 /usr/bin/dep
RUN chmod +x /usr/bin/dep
WORKDIR /go/src/github.com/indeedsecurity/docker-operator
COPY Gopkg.toml Gopkg.lock ./
RUN dep ensure --vendor-only
COPY ./ ${PROJECT_PATH}
RUN export PATH=$PATH:`go env GOHOSTOS`-`go env GOHOSTARCH` \
    && CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build --ldflags '-extldflags "-static"' -o bin/docker-operator \
    && go test $(go list ./... | grep -v /vendor/)

# Production image
FROM scratch
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=builder /etc/passwd /etc/passwd
COPY --from=builder /go/src/github.com/indeedsecurity/docker-operator/bin/docker-operator /docker-operator
ENTRYPOINT ["/docker-operator"]