:zap: Change build-target to musl, and use scratch as base-image for final image

1 files changed, 18 insertions, 8 deletions

diff --git a/Dockerfile b/Dockerfile
index 3f33149..454a759 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,15 +1,25 @@
 FROM rust:1.58 as builder
 
+# Install and configure dependencies needed for building for musl target
+RUN rustup target add x86_64-unknown-linux-musl
+RUN apt update && apt install -y musl-tools musl-dev
+RUN update-ca-certificates
+
+# Add source code to image
 WORKDIR /usr/src/rss-watcher
 COPY . .
 
-RUN cargo install --path .
+# Build
+RUN cargo build --target x86_64-unknown-linux-musl --release
+
+# Move to a smaller image
+FROM scratch
+
+# Copy binary from builder
+COPY --from=builder /usr/src/rss-watcher/target/x86_64-unknown-linux-musl/release/rss-watcher /rss-watcher
 
-#FROM debian:buster-slim
-#RUN apt-get update \
-#    && apt-get install -y libssl-dev libc-bin libc6 \
-#    && rm -rf /var/lib/apt/lists/*
-#COPY --from=builder /usr/local/cargo/bin/rss-watcher /usr/local/bin/rss-watcher
-#ENV RUST_LOG=info
+# Add log level info, if we don't do this, no logs will be written
+ENV RUST_LOG=info
 
-CMD ["rss-watcher"]
+# Start target
+CMD ["/rss-watcher"]