Fix voice in container

Dockerfile

@@ -1,6 +1,7 @@
-FROM python:3
+FROM python:3.9.1-alpine
 WORKDIR /usr/src/app
 COPY requirements.txt ./
+RUN apk add ffmpeg musl-dev linux-headers gcc libffi-dev make opus
 RUN pip install --no-cache-dir -r requirements.txt
 COPY . .
 CMD ["bot.py"]

bot.py

@@ -47,6 +47,9 @@ last_loeh = 0
 config_load()
 bot = commands.Bot(command_prefix=config.get('prefix'))
 
+if 'LIBOPUS' in os.environ and not len(os.environ['LIBOPUS']) == 0:
+    discord.opus.load_opus(os.environ['LIBOPUS'])
+
 
 async def get_loeh(guild: discord.Guild) -> Optional[discord.Member]:
     try:

docker-compose.yml

@@ -4,3 +4,5 @@ services:
     build: .
     stdin_open: true
     tty: true
+    environment:
+      LIBOPUS: "/usr/lib/libopus.so.0"