Create Dockerfile

.dockerignore

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+# Ignore everything
+*
+
+# Except:
+!/src
+!/Cargo.lock
+!/Cargo.toml

Dockerfile

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+FROM rust:slim as builder
+
+WORKDIR /app
+
+RUN rustup default nightly
+
+# Install a few dependencies
+RUN set -eux; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+		pkg-config \
+		clang \
+		build-essential \
+		libssl-dev \
+		libpq-dev \
+		wget; \
+	rm -rf /var/lib/apt/lists/*
+
+# Install ImageMagick
+RUN cd / && \
+	wget https://github.com/ImageMagick/ImageMagick/archive/refs/tags/7.1.1-38.tar.gz && \
+	tar xf 7.1.1-38.tar.gz && \
+	rm 7.1.1-38.tar.gz && \
+	cd ImageMagick-7.1.1-38 && \
+	./configure && \
+	make install -j $(nproc) && \
+	cd .. && \
+	rm -rf ImageMagick-7.1.1-38
+
+# Copy project dependency manifests
+COPY Cargo.toml Cargo.lock /app/
+
+# Create dummy file to force cargo to build the dependencies
+RUN mkdir /app/src && echo "fn main() {}" > /app/src/main.rs
+
+# Prebuild dependencies
+RUN cargo build --release
+
+RUN rm -rf /app/src
+COPY src /app/src
+
+# Touch main to force rebuild
+RUN touch /app/src/main.rs
+
+# Actually build the binary
+RUN cargo build --release
+
+# Use ldd to list all dependencies of /app/target/release/ingest, then copy them to /app/libs
+# Setting LD_LIBRARY_PATH is necessary to find the ImageMagick libraries
+RUN mkdir /app/libs && LD_LIBRARY_PATH=/usr/local/lib ldd /app/target/release/ingest | grep "=> /" | \
+	awk '{print $3}' | xargs -I '{}' cp '{}' /app/libs
+
+# Build the final image
+FROM scratch
+
+LABEL license="MIT"
+LABEL description="LibreTunes, an open-source browser audio player and \
+library manager built for collaborative listening."
+
+# Copy the binary and the compressed assets to the "site root"
+COPY --from=builder /app/target/release/ingest /ingest
+
+# Copy libraries to /lib64
+COPY --from=builder /app/libs /lib64
+COPY --from=builder /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 /lib64/ld-linux-x86-64.so.2
+
+ENV LD_LIBRARY_PATH=/lib64
+
+ENTRYPOINT [ "/ingest" ]