build: add reproducible WebAVP container

.dockerignore

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+.git
+.gitignore
+node_modules
+dist
+__pycache__
+*.pyc
+*.pyo
+*.log
+.hermes
+Archive
+backups

Dockerfile

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+FROM python:3.12-alpine
+
+ARG VCS_REF=unknown
+
+LABEL org.opencontainers.image.title="Alta Video Player DEV" \
+      org.opencontainers.image.description="WebAVP browser runtime for isolated DEV review" \
+      org.opencontainers.image.source="https://git.pejicorp.com/peji/WebAVP" \
+      org.opencontainers.image.revision="${VCS_REF}"
+
+ENV WEBAVP_HOST=0.0.0.0 \
+    WEBAVP_PORT=5152 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+RUN addgroup -S -g 10001 webavp \
+    && adduser -S -D -H -u 10001 -G webavp webavp
+
+COPY --chown=10001:10001 app.py ./
+COPY --chown=10001:10001 static ./static
+COPY --chown=10001:10001 templates ./templates
+
+USER 10001:10001
+
+EXPOSE 5152
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
+  CMD python -c "import urllib.request; urllib.request.urlopen('http://127.0.0.1:5152/', timeout=3).read(1)"
+
+CMD ["python", "app.py"]