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Add cross-compilation support to Dockerfile #94

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Add cross-compilation support to Dockerfile #94

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24 changes: 19 additions & 5 deletions Dockerfile
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Original file line number Diff line number Diff line change
@@ -1,13 +1,27 @@
FROM rust:1-alpine AS builder
RUN apk add --no-cache musl-dev
FROM --platform=$BUILDPLATFORM rust:1-alpine AS builder

# xx provides cross-compilation helpers that auto-detect the target
# architecture from TARGETPLATFORM and configure the sysroot.
COPY --from=tonistiigi/xx / /

RUN apk add --no-cache musl-dev clang lld llvm && \
xx-apk add --no-cache musl-dev

RUN rustup target add $(xx-cargo --print-target-triple)

COPY . /sources
WORKDIR /sources
RUN cargo build --release
RUN chown nobody:nogroup /sources/target/release/bin

# Build the project. xx-cargo automatically configures cross-compilation and linkers.
RUN xx-cargo build --release && \
cp "target/$(xx-cargo --print-target-triple)/release/bin" /pastebin && \
chown nobody:nogroup /pastebin

# Verify the binary is for the correct architecture.
RUN xx-verify /pastebin

FROM scratch
COPY --from=builder /sources/target/release/bin /pastebin
COPY --from=builder /pastebin /pastebin
COPY --from=builder /etc/passwd /etc/passwd

USER nobody
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