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Another attempt for cross-platform Docker images

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Lennart
2025-01-21 15:45:18 +01:00
parent 03c44fbf54
commit e169ba0c58
3 changed files with 28 additions and 6 deletions
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@@ -1,6 +1,18 @@
FROM rust:1.84-alpine AS chef
RUN apk add --no-cache musl-dev \
&& rustup target add x86_64-unknown-linux-musl \
FROM --platform=$BUILDPLATFORM rust:1.84-alpine AS chef
ARG TARGETPLATFORM
ARG BUILDPLATFORM
# Stupid workaound with tempfiles since environment variables
# from RUN commands don't persist across stages
RUN case $TARGETPLATFORM in \
"linux/amd64") echo x86_64-unknown-linux-musl > /tmp/rust_target;; \
"linux/arm64") echo aarch64-unknown-linux-musl > /tmp/rust_target;; \
*) echo "Unsupported platform ${TARGETPLATFORM}"; exit 1;; \
esac
RUN apk add --no-cache musl-dev gcc \
&& rustup target add "$(cat /tmp/rust_target)" \
&& cargo install cargo-chef --locked \
&& rm -rf "$CARGO_HOME/registry"
@@ -16,10 +28,10 @@ FROM chef AS builder
# x86_64-unknown-linux-musl does static linking by default
WORKDIR /rustical
COPY --from=planner /rustical/recipe.json recipe.json
RUN cargo chef cook --release --target x86_64-unknown-linux-musl
RUN cargo chef cook --release --target "$(cat /tmp/rust_target)"
COPY . .
RUN --mount=type=cache,target=target cargo install --target x86_64-unknown-linux-musl --path .
RUN --mount=type=cache,target=target cargo install --target $TARGET --path .
FROM scratch
COPY --from=builder /usr/local/cargo/bin/rustical /usr/local/bin/rustical