FROM smebberson/alpine-base:latest

ENV CONFD_VERSION=v0.12.0-alpha3

RUN apk add --no-cache go git gcc musl-dev && \
    git clone https://github.com/kelseyhightower/confd.git /src/confd && \
    cd /src/confd && \
    git checkout -q --detach "v$CONFD_VERSION" && \
    cd /src/confd/src/github.com/kelseyhightower/confd && \
    GOPATH=/src/confd/vendor:/src/confd go build -a -installsuffix cgo -ldflags '-extld ld -extldflags -static' -x . && \
    mv ./confd /bin/ && \
    chmod +x /bin/confd && \
    apk del go git gcc musl-dev && \
rm -rf /src

ADD /root /