build: enhance docker image build

Dockerfile

@@ -1,13 +1,24 @@
-FROM python:3.7-alpine as build
-RUN apk add build-base cargo git libffi-dev openssl-dev && \
-    pip install -U pip && cd / && mkdir wheels && \
-    git clone --depth=1 --branch=v1.6.9 https://github.com/syncplay/syncplay.git && \
-    echo "" > syncplay/requirements_gui.txt && \
-    cd wheels && SNAPCRAFT_PART_BUILD=1 pip wheel file:///syncplay#egg=syncplay
+ARG PYTHON="python:3.7-alpine3.17"
 
-FROM python:3.7-alpine
-COPY ./init.sh /syncplay
-COPY --from=build /wheels /wheels
-RUN apk add --no-cache openssl libffi && pip install /wheels/*.whl
+FROM ${PYTHON} as build
+ENV SYNCPLAY="1.6.9"
+RUN apk add gcc musl-dev libffi-dev
+RUN wget https://github.com/Syncplay/syncplay/archive/refs/tags/v${SYNCPLAY}.tar.gz && \
+    tar xf v${SYNCPLAY}.tar.gz
+WORKDIR ./syncplay-${SYNCPLAY}/
+RUN cat /dev/null > requirements_gui.txt
+RUN SNAPCRAFT_PART_BUILD=1 pip wheel --wheel-dir /wheels/ ./
+WORKDIR /wheels/
+RUN pip install *.whl
+RUN ls *.whl | xargs -P0 -n1 unzip -d /unzip/
+WORKDIR /release/lib/python3.7/
+RUN cp -r /unzip/ ./site-packages/
+WORKDIR /release/bin/
+RUN cp /usr/local/bin/syncplay-server ./
+COPY ./init.sh ./syncplay
+
+FROM ${PYTHON}
+RUN apk add --no-cache libffi openssl
+COPY --from=build /release/ /usr/local/
 EXPOSE 8999
-ENTRYPOINT ["/syncplay"]
+ENTRYPOINT ["syncplay"]

init.sh

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+echo "boot start"
+
 args="--salt=$SALT"
 
 [ -n "$TLS" ] && args="$args --tls=$TLS"