无法在 UBI8（Red Hat 通用基础映像）中安装 tcpdump 软件包

Question

我正在构建一个基于 UBI8（Red Hat Universal Base Image）的 docker 镜像，Dockerfile 看起来像

FROM registry.access.redhat.com/ubi8/ubi-minimal

RUN microdnf install sudo zip tar bash procps openssl iptables net-tools tcpdump && microdnf update; microdnf clean all

ENTRYPOINT [ "/usr/sbin/tcpdump" ]

但未能安装 tcpdump 包。

Downloading metadata...
error: No package matches 'tcpdump'

(process:57): librhsm-WARNING **: 22:03:51.398: Found 0 entitlement certificates

(process:57): librhsm-WARNING **: 22:03:51.400: Found 0 entitlement certificates

(process:57): libdnf-WARNING **: 22:03:51.400: Loading "/etc/dnf/dnf.conf": IniParser: Can't open file

如何修复它以便在 UBI 中安装 tcpdump 包？谢谢。

Answer 1

就我而言，我正在创建基于 ubi8-minimal ( https://hub.docker.com/r/jboss/keycloak ) 的自定义版本的映像，因此我无法更改基本映像。支持工具图像不公开 - 需要注册。我最终手动安装：

curl http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/tcpdump-4.9.3-1.el8.x86_64.rpm -o tcpdump-4.9.3-1.el8.x86_64.rpm  
microdnf install shadow-utils  
microdnf install libpcap-14:1.9.1-5.el8.x86_64  
rpm -i  tcpdump-4.9.3-1.el8.x86_64.rpm