为什么我需要一个shell脚本来在容器内运行python脚本？

Question

为什么第一个Dockerfile不起作用？ 这表示它报告了docker: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "exec: \\"python3 hello.py\\": executable file not found in $PATH": unknown. ERRO[0001] error waiting for container: context canceled docker: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "exec: \\"python3 hello.py\\": executable file not found in $PATH": unknown. ERRO[0001] error waiting for container: context canceled ，第二个Dockerfile像吊饰一样工作？

换句话说，为什么我需要一个shell脚本来在容器内运行python脚本？

Dockerfile 1：

FROM python:3.7-alpine
COPY hello.py .
ENTRYPOINT [ "python hello.py" ]

Dockerfile 2：

FROM python:3.7-alpine
COPY hello.py .
COPY entrypoint.sh /usr/local/bin/
RUN chmod +x /usr/local/bin/entrypoint.sh
ENTRYPOINT [ "entrypoint.sh" ]

Answer 1

ENTRYPOINT语法要求

• ENTRYPOINT [ "python", "hello.py" ]执行表格，推荐

• ENTRYPOINT python hello.py外壳形式