Merge pull request #261 from PaoloOranges/build-for-armv7

Build for armv7

Dockerfile

@@ -1,22 +1,63 @@
-FROM rust:latest AS builder
 
-WORKDIR /usr/src/tado-exporter
+FROM --platform=$BUILDPLATFORM rust:slim-bullseye AS builder
 
-RUN apt-get update && \
-    apt-get -y install ca-certificates libssl-dev musl-tools && \
+RUN apt update && \
+    apt install -y ca-certificates libssl-dev libfindbin-libs-perl make && \
     rm -rf /var/lib/apt/lists/*
 
-RUN rustup target add x86_64-unknown-linux-musl
+WORKDIR /usr/src/tado-exporter
 
 COPY Cargo.* .
 COPY src/ ./src
+RUN rustup toolchain install stable
+
+# Work only on AMD64, NO CROSS COMPILE Tested on Windows
+FROM builder as builder-amd64
+ENV TARGET=x86_64-unknown-linux-gnu
+
+# Work only on ARM64, NO CROSS COMPILE Tested OSX
+FROM builder as builder-arm64
+ENV TARGET=aarch64-unknown-linux-gnu
+
+FROM builder as builder-armv7
+ENV TARGET=armv7-unknown-linux-gnueabihf
+RUN apt update && \
+    apt install -y libc6-dev-armhf-cross gcc-arm-linux-gnueabihf && \
+    rm -rf /var/lib/apt/lists/*
+
+ENV CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc CC_armv7_unknown_Linux_gnueabihf=arm-linux-gnueabihf-gcc CXX_armv7_unknown_linux_gnueabihf=arm-linux-gnueabihf-g++
 
-RUN cargo build --target x86_64-unknown-linux-musl --release
+FROM builder-$TARGETARCH$TARGETVARIANT as final-builder
+RUN rustup target add ${TARGET}
+RUN cargo build --target ${TARGET} --release --target-dir /build && \
+    cp /build/$TARGET/release/tado-exporter / && \
+    rm -rf /build
 
-FROM scratch
+FROM --platform=$TARGETPLATFORM debian:bullseye-slim
 LABEL name="tado-exporter"
 
-COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
-COPY --from=builder /usr/src/tado-exporter/target/x86_64-unknown-linux-musl/release/tado-exporter /
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETVARIANT
+ARG TARGETPLATFORM
+ARG BUILDOS
+ARG BUILDARCH
+ARG BUILDVARIANT
+ARG BUILDPLATFORM
+
+RUN echo "I'm building for $TARGETOS/$TARGETARCH/$TARGETVARIANT"
+RUN echo "I'm building on $BUILDOS/$BUILDARCH/$BUILDVARIANT"
+
+RUN echo "builder-$TARGETARCH$TARGETVARIANT"
+
+RUN apt update && \
+    if [ "$TARGETARCH$TARGETVARIANT" -eq "armv7"]; then apt install patchelf; fi && \
+    rm -rf /var/lib/apt/lists/*
+
+COPY --from=final-builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+COPY --from=final-builder /tado-exporter /usr/bin/
+
+
+RUN if [ "$TARGETARCH$TARGETVARIANT" -eq "armv7"]; then patchelf --set-interpreter /lib/ld-linux-armhf.so.3 /tado-exporter; fi
 
-CMD ["/tado-exporter"]
+CMD ["tado-exporter"]