Updated to work on a raspberry pi

Dockerfile

@@ -1,26 +1,25 @@
-FROM rust as build
+FROM --platform=$BUILDPLATFORM debian:bullseye-slim as build
 
-WORKDIR /build
-
-RUN apt-get -yqq update && \
-    apt-get install --no-install-recommends -yqq libasound2-dev && \
-    git clone --branch=master https://github.com/Spotifyd/spotifyd.git . 
-
-RUN cargo build --release --features alsa_backend
-
-FROM debian:bullseye-slim
+ENV SPOTIFYD_VERSION=v0.3.5
+ENV URL=https://github.com/Spotifyd/spotifyd/releases/download/${SPOTIFYD_VERSION}/spotifyd-linux-armhf-full.tar.gz
 
 RUN apt-get update && \
-    apt-get install -yqq --no-install-recommends libasound2 alsa-utils && \
-    rm -rf /var/lib/apt/lists/* && \
-    groupadd -r spotify && \
-    useradd --no-log-init -r -g spotify -G audio spotify
+    apt-get install -yqq --no-install-recommends ca-certificates wget 
 
-USER spotify
+RUN wget ${URL} -O - | tar -xz && chmod +x /spotifyd
 
-COPY --from=build /build/target/release/spotifyd  /spotifyd
-COPY start.sh /start.sh
+FROM --platform=$TARGETPLATFORM debian:bullseye-slim
 
-WORKDIR /
+COPY --from=build /spotifyd /app/spotifyd
+COPY start.sh /app/start.sh
 
-ENTRYPOINT [ "/start.sh" ]
+RUN apt-get update && \
+    apt-get install -yqq --no-install-recommends ca-certificates libdbus-1-3 libasound2 && \
+    useradd -r -s /bin/false spotifyd && \
+    usermod -a -G audio spotifyd && \
+    chown -R spotifyd:spotifyd /app
+
+USER spotifyd
+WORKDIR /app
+
+ENTRYPOINT [ "/app/start.sh" ]