我也遇到了同样的问题.我通过在 RUN apk add 命令之前添加 RUN apk update 解决了这个问题.(我使用的是 python:3.6-alpine)

I was facing the same issue. I solved this issue by adding RUN apk update before RUN apk add commands.(I was using python:3.6-alpine)

Dockerfile

FROM python:3.6-alpine
RUN apk update
RUN apk add gcc libc-dev g++ libffi-dev libxml2 unixodbc-dev mariadb-dev postgresql-dev