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kca/ocsp-responder/Dockerfile
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Build static musl OCSP image in Gitea Actions
2026-10-23 10:00:36 +00:00

42 lines
1.5 KiB
Docker

# syntax=docker/dockerfile:1
# Standalone Rust/Axum OCSP responder.
#
# The final image is scratch: the binary is a statically linked musl
# executable and the only file besides it is the CA bundle needed for
# outbound HTTPS to S3. Configuration, CA certificates and delegated signer
# material are mounted at runtime.
FROM rust:1-alpine AS builder
RUN apk add --no-cache build-base musl-dev perl ca-certificates file binutils \
&& rustup target add x86_64-unknown-linux-musl
WORKDIR /app
COPY ocsp-responder/Cargo.toml ocsp-responder/Cargo.lock ./
COPY ocsp-responder/src ./src
RUN --mount=type=cache,target=/usr/local/cargo/registry \
--mount=type=cache,target=/app/target \
RUSTFLAGS="-C target-feature=+crt-static" \
cargo build --release --locked --target x86_64-unknown-linux-musl \
&& strip target/x86_64-unknown-linux-musl/release/kca-ocsp-responder \
&& file target/x86_64-unknown-linux-musl/release/kca-ocsp-responder \
| grep -Eq "statically linked|static-pie linked" \
&& cp target/x86_64-unknown-linux-musl/release/kca-ocsp-responder /kca-ocsp-responder
FROM scratch
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=builder /kca-ocsp-responder /kca-ocsp-responder
ENV OCSP_CONFIG=/etc/ocsp/responder.yaml \
SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
USER 65532:65532
EXPOSE 2560
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s \
CMD ["/kca-ocsp-responder", "--healthcheck"]
ENTRYPOINT ["/kca-ocsp-responder"]