caddy.Dockerfile

FROM golang:alpine3.9
RUN apk add git
RUN go get github.com/mholt/caddy/caddy && \
  go get github.com/caddyserver/builds
WORKDIR /go/src/github.com/mholt/caddy/caddy
RUN \
  go get github.com/caddyserver/dnsproviders/digitalocean && \
  go get github.com/nicolasazrak/caddy-cache && \
  go get github.com/captncraig/cors && \
  go get github.com/miekg/caddy-prometheus && \
  go get github.com/hiphref/caddy-geoip && \
  go get github.com/xuqingfeng/caddy-rate-limit

RUN \
  cd caddymain && \
  head -n 23 run.go > newrun.go && \
  echo ' _ "github.com/caddyserver/dnsproviders/digitalocean"' >> newrun.go && \
  echo ' _ "github.com/nicolasazrak/caddy-cache"' >> newrun.go && \
  echo ' _ "github.com/captncraig/cors/caddy"' >> newrun.go && \
  echo ' _ "github.com/miekg/caddy-prometheus"' >> newrun.go && \
  echo ' _ "github.com/hiphref/caddy-geoip"' >> newrun.go && \
  echo ' _ "github.com/xuqingfeng/caddy-rate-limit"' >> newrun.go && \
  tail -n +24 run.go >> newrun.go && \
  rm -f run.go && \
  mv newrun.go run.go

RUN go run build.go
RUN ./caddy -plugins

FROM alpine:3.9
COPY --from=0 /go/src/github.com/mholt/caddy/caddy/caddy /usr/local/bin/caddy
ENTRYPOINT ["/usr/local/bin/caddy"]