相关疑难解决方法(0)

我有一个从 GitLab 部署我的容器的管道。上次部署是 5 天前，没有任何问题。今天我部署它并收到以下错误：

$ apk add --no-cache curl python py-pip
 fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
 fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
 ERROR: unsatisfiable constraints:
   python (missing):
     required by: world[python]

我的工作定义是：

my-deploy:
  type: my-deploy
  image: docker:stable
  script:
    - apk update
    - apk add --no-cache curl python py-pip <-- Here the erorr happens
    ...

尝试安装时pdftk apk抛出此错误。

ERROR: unsatisfiable constraints:
  pdftk (missing):
    required by: world[pdftk]

这是整个输出：

/opt/app # apk add pdftk
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/community/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
  pdftk (missing):
    required by: world[pdftk]

我是 apk 新手，不确定问题的含义或如何解决它。