watchtower/Dockerfile

##
## Alpine image to get some needed data
##
#FROM alpine:latest as alpine
#RUN apk add --no-cache \
#    ca-certificates \
#    tzdata
#
##
## Image
##
#FROM scratch
#LABEL "com.centurylinklabs.watchtower"="true"
#
## copy files from other containers
#COPY --from=alpine /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
#COPY --from=alpine /usr/share/zoneinfo /usr/share/zoneinfo
#
#COPY watchtower /
#ENTRYPOINT ["/watchtower"]

# build stage
FROM golang:alpine AS build-env

RUN apk add --no-cache openssh-client git curl

RUN curl https://glide.sh/get | sh

WORKDIR /go/src/github.com/kopfkrieg/watchtower
COPY . .

# RUN set -x && \
#     go get github.com/golang/dep/cmd/dep && \
#     dep ensure -v
RUN glide install

RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -o watchtower .
# RUN go build -o watchtower .

# final stage
FROM alpine
LABEL "com.centurylinklabs.watchtower"="true"

RUN apk add --no-cache \
    ca-certificates \
    tzdata

COPY --from=build-env /go/src/github.com/kopfkrieg/watchtower/watchtower /
ENTRYPOINT ["/watchtower"]