Dockerfile

# Copyright 2025 Dotanuki Labs
# SPDX-License-Identifier: MIT

# Adapted from : https://kerkour.com/rust-docker-from-scratch
FROM rust:alpine3.21@sha256:7bae7c67364dad5ebbd4060923b34d734fbed66d7c1cf3af72aa2f062af93eb6 AS builder

RUN apk update && \
    apk upgrade --no-cache && \
    apk add --no-cache lld mold musl musl-dev libc-dev cmake clang clang-dev openssl file \
        libressl-dev jemalloc-dev git build-base bash curl zip gnupg coreutils gcc g++ zstd binutils ca-certificates

WORKDIR /src
COPY . ./
RUN cargo build --release --package canopus


FROM alpine@sha256:28bd5fe8b56d1bd048e5babf5b10710ebe0bae67db86916198a6eec434943f8b AS extras

RUN apk update && \
    apk upgrade --no-cache && \
    apk add --no-cache ca-certificates mailcap tzdata

RUN update-ca-certificates

FROM scratch

COPY --from=extras --chmod=444 \
    /etc/passwd \
    /etc/group \
    /etc/nsswitch.conf \
    /etc/mime.types \
    /etc/

COPY --from=extras --chmod=444 /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=extras --chmod=444 /usr/share/zoneinfo /usr/share/zoneinfo

COPY --from=builder /src/target/release/canopus /bin/canopus

WORKDIR /tmp

ENTRYPOINT ["/bin/canopus"]