列出本地系统上的所有镜像：
[root@mysql lib]# podman images
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.io/library/mysql latest 041315a16183 7 days ago 579 MB
docker.io/library/mysql 8.0.33 041315a16183 7 days ago 579 MB
删除 registry.redhat.io/rhel8/rsyslog 镜像：
要从您的系统中删除所有镜像：
[root@mysql lib]# podman rmi docker.io/library/mysql
Untagged: docker.io/library/mysql:latest
[root@mysql lib]# podman ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@mysql lib]# podman images
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.io/library/mysql 8.0.33 041315a16183 7 days ago 579 MB
[root@mysql lib]# podman rmi docker.io/library/mysql
Error: docker.io/library/mysql: image not known
[root@mysql lib]# podman rmi docker.io/library/mysql:8.0.33
Untagged: docker.io/library/mysql:8.0.33
Deleted: 041315a161837f8bb87361e13390abda7159b98aeedee5e6152a0bb7a9b45f27
[root@mysql lib]# podman images
REPOSITORY TAG IMAGE ID CREATED SIZE
查看系统已经安装了哪些docker包：
[root@mysql lib]# yum list installed | grep podman
podman.x86_64 3:4.5.1-5.module_el8+461+0c6b54ea @AppStream
podman-catatonit.x86_64 3:4.5.1-5.module_el8+461+0c6b54ea @AppStream
podman-docker.noarch 3:4.5.1-5.module_el8+461+0c6b54ea @AppStream
[root@mysql lib]# yum list installed | grep docker
podman-docker.noarch 3:4.5.1-5.module_el8+461+0c6b54ea @AppStream
[root@mysql lib]# yum remove podman.x86_64 podman-catatonit.x86_64 podman-docker.noarch
Dependencies resolved.
===========================================================================================
Package Arch Version Repository Size
===========================================================================================
Removing:
podman x86_64 3:4.5.1-5.module_el8+461+0c6b54ea @AppStream 50 M
podman-catatonit x86_64 3:4.5.1-5.module_el8+461+0c6b54ea @AppStream 765 k
podman-docker noarch 3:4.5.1-5.module_el8+461+0c6b54ea @AppStream 7.6 k
Removing unused dependencies:
conmon x86_64 3:2.1.7-1.module_el8+454+d7ef4b8d @AppStream 172 k
container-selinux noarch 2:2.218.0-1.module_el8+454+d7ef4b8d @AppStream 67 k
containernetworking-plugins x86_64 1:1.3.0-2.module_el8+461+0c6b54ea @AppStream 61 M
containers-common x86_64 2:1-51.module_el8+454+d7ef4b8d @AppStream 504 k
criu x86_64 3.18-4.module_el8+454+d7ef4b8d @AppStream 1.5 M
fuse-overlayfs x86_64 1.12-1.module_el8+454+d7ef4b8d @AppStream 128 k
fuse3 x86_64 3.2.1-12.el8 @base 90 k
fuse3-libs x86_64 3.3.0-17.el8 @base 274 k
libnet x86_64 1.1.6-15.el8 @AppStream 170 k
libslirp x86_64 4.4.0-1.module_el8+454+d7ef4b8d @AppStream 134 k
protobuf-c x86_64 1.3.0-8.el8 @AppStream 56 k
runc x86_64 1:1.1.7-2.module_el8+463+b24391b1 @AppStream 9.7 M
shadow-utils-subid x86_64 2:4.6-18.el8 @base 205 k
slirp4netns x86_64 1.2.0-3.module_el8+454+d7ef4b8d @AppStream 103 k
Transaction Summary
===========================================================================================
Remove 17 Packages
Freed space: 126 M
Is this ok [y/N]: y
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Running scriptlet: podman-docker-3:4.5.1-5.module_el8+461+0c6b54ea.noarch 1/1
Erasing : podman-docker-3:4.5.1-5.module_el8+461+0c6b54ea.noarch 1/17
Running scriptlet: podman-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64 2/17
Erasing : podman-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64 2/17
Running scriptlet: podman-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64 2/17
Erasing : containers-common-2:1-51.module_el8+454+d7ef4b8d.x86_64 3/17
Erasing : container-selinux-2:2.218.0-1.module_el8+454+d7ef4b8d.noarch 4/17
Running scriptlet: container-selinux-2:2.218.0-1.module_el8+454+d7ef4b8d.noarch 4/17
Erasing : podman-catatonit-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64 5/17
Running scriptlet: podman-catatonit-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64 5/17
Erasing : fuse-overlayfs-1.12-1.module_el8+454+d7ef4b8d.x86_64 6/17
Erasing : slirp4netns-1.2.0-3.module_el8+454+d7ef4b8d.x86_64 7/17
Erasing : runc-1:1.1.7-2.module_el8+463+b24391b1.x86_64 8/17
Erasing : criu-3.18-4.module_el8+454+d7ef4b8d.x86_64 9/17
Erasing : libnet-1.1.6-15.el8.x86_64 10/17
Running scriptlet: libnet-1.1.6-15.el8.x86_64 10/17
/sbin/ldconfig: /usr/lib64/llvm15/lib/libclang.so.15 is not a symbolic link
Erasing : protobuf-c-1.3.0-8.el8.x86_64 11/17
Erasing : libslirp-4.4.0-1.module_el8+454+d7ef4b8d.x86_64 12/17
Erasing : fuse3-3.2.1-12.el8.x86_64 13/17
Erasing : fuse3-libs-3.3.0-17.el8.x86_64 14/17
Running scriptlet: fuse3-libs-3.3.0-17.el8.x86_64 14/17
/sbin/ldconfig: /usr/lib64/llvm15/lib/libclang.so.15 is not a symbolic link
Erasing : conmon-3:2.1.7-1.module_el8+454+d7ef4b8d.x86_64 15/17
Erasing : containernetworking-plugins-1:1.3.0-2.module_el8+461+0c6b54ea 16/17
Running scriptlet: containernetworking-plugins-1:1.3.0-2.module_el8+461+0c6b54ea 16/17
Erasing : shadow-utils-subid-2:4.6-18.el8.x86_64 17/17
Running scriptlet: shadow-utils-subid-2:4.6-18.el8.x86_64 17/17
/sbin/ldconfig: /usr/lib64/llvm15/lib/libclang.so.15 is not a symbolic link
Verifying : conmon-3:2.1.7-1.module_el8+454+d7ef4b8d.x86_64 1/17
Verifying : container-selinux-2:2.218.0-1.module_el8+454+d7ef4b8d.noarch 2/17
Verifying : containernetworking-plugins-1:1.3.0-2.module_el8+461+0c6b54ea 3/17
Verifying : containers-common-2:1-51.module_el8+454+d7ef4b8d.x86_64 4/17
Verifying : criu-3.18-4.module_el8+454+d7ef4b8d.x86_64 5/17
Verifying : fuse-overlayfs-1.12-1.module_el8+454+d7ef4b8d.x86_64 6/17
Verifying : fuse3-3.2.1-12.el8.x86_64 7/17
Verifying : fuse3-libs-3.3.0-17.el8.x86_64 8/17
Verifying : libnet-1.1.6-15.el8.x86_64 9/17
Verifying : libslirp-4.4.0-1.module_el8+454+d7ef4b8d.x86_64 10/17
Verifying : podman-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64 11/17
Verifying : podman-catatonit-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64 12/17
Verifying : podman-docker-3:4.5.1-5.module_el8+461+0c6b54ea.noarch 13/17
Verifying : protobuf-c-1.3.0-8.el8.x86_64 14/17
Verifying : runc-1:1.1.7-2.module_el8+463+b24391b1.x86_64 15/17
Verifying : shadow-utils-subid-2:4.6-18.el8.x86_64 16/17
Verifying : slirp4netns-1.2.0-3.module_el8+454+d7ef4b8d.x86_64 17/17
Removed:
conmon-3:2.1.7-1.module_el8+454+d7ef4b8d.x86_64
container-selinux-2:2.218.0-1.module_el8+454+d7ef4b8d.noarch
containernetworking-plugins-1:1.3.0-2.module_el8+461+0c6b54ea.x86_64
containers-common-2:1-51.module_el8+454+d7ef4b8d.x86_64
criu-3.18-4.module_el8+454+d7ef4b8d.x86_64
fuse-overlayfs-1.12-1.module_el8+454+d7ef4b8d.x86_64
fuse3-3.2.1-12.el8.x86_64
fuse3-libs-3.3.0-17.el8.x86_64
libnet-1.1.6-15.el8.x86_64
libslirp-4.4.0-1.module_el8+454+d7ef4b8d.x86_64
podman-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64
podman-catatonit-3:4.5.1-5.module_el8+461+0c6b54ea.x86_64
podman-docker-3:4.5.1-5.module_el8+461+0c6b54ea.noarch
protobuf-c-1.3.0-8.el8.x86_64
runc-1:1.1.7-2.module_el8+463+b24391b1.x86_64
shadow-utils-subid-2:4.6-18.el8.x86_64
slirp4netns-1.2.0-3.module_el8+454+d7ef4b8d.x86_64
Complete!
[root@mysql lib]# docker --version
-bash: /usr/bin/docker: No such file or directory
[root@mysql lib]# podman --version
-bash: /usr/bin/podman: No such file or directory
[root@mysql lib]#