Dockerfile

# Based on https://github.com/erlang/docker-erlang-example

FROM erlang:27-alpine AS builder

RUN apk add --no-cache git

RUN mkdir -p /build/mtproto_proxy

WORKDIR /build/mtproto_proxy
COPY src src
COPY rebar3 rebar3
COPY rebar.config rebar.config
COPY rebar.lock rebar.lock
COPY config config
RUN if [ ! -f config/prod-sys.config ]; then cp config/sys.config.example config/prod-sys.config; fi
RUN if [ ! -f config/prod-vm.args ]; then cp config/vm.args.example config/prod-vm.args; fi

RUN ./rebar3 as prod release

# Must match the Alpine version used by erlang:27-alpine to ensure ERTS ABI compatibility
FROM alpine:3.22
RUN apk add --no-cache openssl ncurses-libs dumb-init libstdc++

RUN mkdir -p /opt /var/log/mtproto-proxy
COPY start.sh /bin/start.sh
COPY --from=builder /build/mtproto_proxy/_build/prod/rel/mtp_proxy /opt/mtp_proxy

ENTRYPOINT ["/usr/bin/dumb-init", "--", "/bin/start.sh"]