use pip for python dependencies

Dockerfile

@@ -1,20 +1,30 @@
 FROM alpine:edge as base
-RUN ["apk", "add", "--no-cache", "--repository", "https://dl-cdn.alpinelinux.org/alpine/edge/testing", "streamlink", "py3-tornado", "py3-aiohttp", "py3-aiohttp-socks"]
-RUN ["mkdir", "/app"]
-COPY ["stream.py", "/app/stream.py"]
-COPY ["sources.py", "/app/sources.py"]
+RUN ["apk", "add", "--no-cache", "py3-virtualenv"]
+RUN ["mkdir", "-p", "/app"]
+COPY ["tv.json", "/app/setup/tv.json"]
+COPY ["backend/start.sh", "/app/start.sh"]
+COPY ["backend/install.sh", "/app/setup/install.sh"]
+COPY ["backend/sources.py", "/app/setup/sources.py"]
+COPY ["backend/stream.py", "/app/stream.py"]
 COPY ["frontend/index.html", "/app/index.html"]
 COPY ["frontend/script.js", "/app/script.js"]
 COPY ["frontend/style.css", "/app/style.css"]
 RUN ["chmod", "-R", "755", "/app"]
-COPY ["tv.json", "/app/tv.json"]
-RUN ["python3", "/app/sources.py"]
-RUN ["rm", "/app/tv.json"]
-RUN ["rm", "/app/sources.py"]
+
+FROM base as sources
+RUN ["apk", "add", "--no-cache", "py3-requests"]
+RUN ["python3", "/app/setup/sources.py"]
+RUN ["rm", "-r", "/app/setup"]
+
+FROM base as venv
+RUN ["apk", "add", "--no-cache", "musl-dev", "build-base", "python3-dev"]
+RUN ["/app/setup/install.sh"]
+RUN ["rm", "-r", "/app/setup"]
 
 FROM scratch
-COPY --from=base / /
+COPY --from=sources / /
+COPY --from=venv /app/venv /app/venv
 USER 1444:1444
 ENV ICECAST_SERVER=https://icecast.purser.it:7000
 ENV STREAM_SERVER=https://stream.purser.it
-ENTRYPOINT ["/app/stream.py"]
+ENTRYPOINT ["/app/start.sh"]

backend/install.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env sh
+virtualenv --python=$(which python3) /app/venv
+source /app/venv/bin/activate
+pip install --upgrade pip
+pip install --upgrade streamlink tornado aiohttp aiohttp-socks

backend/sources.py

@@ -25,11 +25,10 @@ else:
             playlist[mount_name] = value
 
 if playlist is not None:
-    with open("/app/tv.json", "r") as f:
+    with open("/app/setup/tv.json", "r") as f:
         tv = json.loads(f.read())
         for name in tv:
             playlist[name] = tv[name]
-
     with open("/app/sources.json", "w+") as f:
         f.write(json.dumps(playlist))
 try:

backend/start.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+source /app/venv/bin/activate
+exec /app/stream.py