Dockerfile.alpine

# syntax=docker/dockerfile:1
ARG RUST_VERSION=1.80.0
ARG ALPINE_VERSION=3.20
ARG BUILD_ARGS=""

## Builder image
FROM rust:${RUST_VERSION}-alpine${ALPINE_VERSION} AS builder

# ring requires musl-dev.
RUN \
    --mount=type=cache,target=/var/cache/apk \
<<EOF
#!/bin/sh
set -eux
apk update
apk upgrade
apk add musl-dev
EOF

WORKDIR /app
COPY Cargo.lock Cargo.toml /app/
COPY src /app/src/

ARG BUILD_ARGS
RUN --mount=type=cache,target=/usr/local/cargo/registry \
    --mount=type=cache,target=/app/target \
<<EOF
#!/bin/sh
set -eux
cargo build --release ${BUILD_ARGS}
cp ./target/release/vercel-log-drain /vercel-log-drain
EOF

## Runtime image
FROM alpine:${ALPINE_VERSION}

RUN \
    --mount=type=cache,target=/var/cache/apk \
<<EOF
#!/bin/sh
set -eux
apk update
apk upgrade
apk add ca-certificates
EOF

COPY --from=builder /vercel-log-drain /usr/local/bin/vercel-log-drain
EXPOSE 8000
ENTRYPOINT [ "vercel-log-drain" ]