demo nsenter approach to execute command in another container

fastapi-nsenter/Dockerfile

@@ -0,0 +1,21 @@
+FROM alpine:3.21 AS base
+RUN  sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories && apk upgrade
+
+FROM base AS soffice
+RUN  apk add --no-cache libreoffice musl-locales font-wqy-zenhei
+VOLUME /data
+CMD  /bin/sh -c "echo \$\$ > /data/libreoffice.pid; while true; do sleep 1000000; done"
+
+FROM base AS venv-builder
+RUN apk add python3-dev uv gcc musl-dev linux-headers
+WORKDIR /app
+COPY requirements.txt .
+RUN  uv venv -i https://mirrors.aliyun.com/pypi/simple && uv pip install -i https://mirrors.aliyun.com/pypi/simple -r requirements.txt
+
+FROM base AS service
+RUN  apk add python3
+COPY --from=venv-builder /app/.venv /app/.venv
+COPY ./ /app/
+WORKDIR /app
+VOLUME /data
+CMD  /app/entrypoint.sh