## This Dockerfile compiles the watchdog with delve support. It enables the tests
## to be debugged inside a container.
##
## Run with:
## docker run --memory=64MiB --memory-swap=64MiB -p 2345:2345 <image> \
##     --listen=:2345 --headless=true --log=true \
##     --log-output=debugger,debuglineerr,gdbwire,lldbout,rpc \
##     --accept-multiclient --api-version=2 exec /root/watchdog.test
##
FROM golang:1.15.5
WORKDIR /watchdog
COPY . .
RUN CGO_ENABLED=0 go get -ldflags "-s -w -extldflags '-static'" github.com/go-delve/delve/cmd/dlv
RUN CGO_ENABLED=0 go test -gcflags "all=-N -l" -c -o ./watchdog.test

FROM alpine:latest
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=0 /go/bin/dlv /dlv
COPY --from=0 /watchdog/watchdog.test .
ENTRYPOINT [ "/dlv" ]
EXPOSE 2345