loki/cmd/loki/Dockerfile.debug

ARG BUILD_IMAGE=grafana/loki-build-image:0.29.3
# Directories in this file are referenced from the root of the project not this folder
# This file is intended to be called from the root like so:
# docker build -t grafana/loki -f cmd/loki/Dockerfile.debug .

FROM golang:1.20.7-alpine as goenv
RUN go env GOARCH > /goarch && \
    go env GOARM > /goarm && \
    go install github.com/go-delve/delve/cmd/dlv@latest

FROM --platform=linux/amd64 $BUILD_IMAGE as build
COPY --from=goenv /goarch /goarm /
COPY . /src/loki
WORKDIR /src/loki
RUN make clean && \
    GOARCH=$(cat /goarch) GOARM=$(cat /goarm) make BUILD_IN_CONTAINER=false loki-debug

FROM       alpine:3.18.3
RUN        apk add --update --no-cache ca-certificates
COPY       --from=build /src/loki/cmd/loki/loki-debug /usr/bin/loki-debug
COPY       --from=goenv /go/bin/dlv /usr/bin/dlv
COPY       cmd/loki/loki-docker-config.yaml /etc/loki/local-config.yaml
EXPOSE     3100

# Expose 40000 for delve
EXPOSE 40000

# Allow delve to run on Alpine based containers.
RUN apk add --no-cache libc6-compat

# Run delve, ending with -- because we pass params via kubernetes, per the docs:
#   Pass flags to the program you are debugging using --, for example:`
#   dlv exec ./hello -- server --config conf/config.toml`
ENTRYPOINT ["/usr/bin/dlv", "--listen=:40000", "--headless=true", "--log", "--continue", "--accept-multiclient" , "--api-version=2", "exec", "/usr/bin/loki-debug", "--"]
CMD        ["-config.file=/etc/loki/local-config.yaml"]