Prepare WebSSH for self-hosted deployment

Dockerfile

@@ -1,18 +1,21 @@
-FROM python:3-alpine
+FROM python:3.12-slim
 
 LABEL maintainer='<author>'
 LABEL version='0.0.0-dev.0-build.0'
 
-ADD . /code
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
 WORKDIR /code
-RUN \
-  apk add --no-cache libc-dev libffi-dev gcc && \
-  pip install -r requirements.txt --no-cache-dir && \
-  apk del gcc libc-dev libffi-dev && \
-  addgroup webssh && \
-  adduser -Ss /bin/false -g webssh webssh && \
-  chown -R webssh:webssh /code
+
+COPY requirements.txt /code/
+RUN pip install -r requirements.txt --no-cache-dir
+
+COPY . /code
+RUN useradd --system --create-home --shell /usr/sbin/nologin webssh && \
+  mkdir -p /data && \
+  chown -R webssh:webssh /code /data
 
 EXPOSE 8888/tcp
 USER webssh
-CMD ["python", "run.py"]
+CMD ["python", "run.py", "--address=0.0.0.0", "--port=8888", "--data-dir=/data"]