Merge branch 'master' into dev

Dockerfile

@@ -1,4 +1,5 @@
 ARG PYTHON="python:3.12-alpine3.21"
+ARG RUNAS="root"
 
 FROM ${PYTHON} AS builder
 RUN apk add uv gcc musl-dev libffi-dev
@@ -10,7 +11,7 @@ RUN uv tree --frozen && \
 RUN pip wheel --no-deps ./src/syncplay/ --wheel-dir /wheels/ && \
     pip wheel --require-hashes -r requirements.txt --wheel-dir /wheels/
 
-FROM ${PYTHON}
+FROM ${PYTHON} AS root
 RUN sh -c '[ $(getconf LONG_BIT) -eq 64 ] || apk add --no-cache libgcc'
 RUN --mount=type=cache,ro,from=builder,source=/wheels/,target=/wheels/ \
     cd /usr/local/lib/python3.*/ && ls /wheels/*.whl | xargs -P0 -n1 unzip -d ./site-packages/
@@ -18,4 +19,14 @@ COPY ./src/boot.py /usr/bin/syncplay
 ENV PYTHONUNBUFFERED=1
 EXPOSE 8999
 WORKDIR /data/
+
+FROM root AS user
+ARG USER_UID=800
+ARG USER_GID=800
+RUN addgroup -g "${USER_GID}" -S syncplay && \
+    adduser -u "${USER_UID}" -S syncplay -G syncplay && \
+    chown -R syncplay:syncplay /data
+USER syncplay
+
+FROM ${RUNAS}
 ENTRYPOINT ["syncplay"]