EC2 instance t2.micro unable to install docker

My kernal version:

[ec2-user@ip-172-31-15-171 ~]$ uname -aLinux ip-172-31-15-171 4.14.158-101.185.amzn1.x86_64 #1 SMP Tue Dec 24 03:25:32 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

What I tried, but only get:

[ec2-user@ip-172-31-15-171 ~]$ sudo yum install -y dockerLoaded plugins: priorities, update-motd, upgrade-helperResolving Dependencies--> Running transaction check---> Package docker.x86_64 0:19.03.6ce-3.57.amzn1 will be installed--> Processing Dependency: runc >= 1.0.0 for package: docker-19.03.6ce-3.57.amzn1.x86_64--> Processing Dependency: containerd >= 1.3.2 for package: docker-19.03.6ce-3.57.amzn1.x86_64--> Processing Dependency: xfsprogs for package: docker-19.03.6ce-3.57.amzn1.x86_64--> Processing Dependency: pigz for package: docker-19.03.6ce-3.57.amzn1.x86_64--> Processing Dependency: libseccomp.so.2()(64bit) for package: docker-19.03.6ce-3.57.amzn1.x86_64--> Running transaction check---> Package containerd.io.x86_64 0:1.2.13-3.1.el7 will be installed--> Processing Dependency: container-selinux >= 2:2.74 for package: containerd.io-1.2.13-3.1.el7.x86_64--> Processing Dependency: systemd for package: containerd.io-1.2.13-3.1.el7.x86_64--> Processing Dependency: systemd for package: containerd.io-1.2.13-3.1.el7.x86_64---> Package libseccomp.x86_64 0:2.3.1-2.4.amzn1 will be installed---> Package pigz.x86_64 0:2.3.3-1.6.amzn1 will be installed---> Package xfsprogs.x86_64 0:4.5.0-18.23.amzn1 will be installed--> Finished Dependency ResolutionError: Package: containerd.io-1.2.13-3.1.el7.x86_64 (docker-ce-stable)           Requires: systemdError: Package: containerd.io-1.2.13-3.1.el7.x86_64 (docker-ce-stable)           Requires: container-selinux >= 2:2.74 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest

I have googled a lot, someone says that ami does not support systemctl. I have no idea to figure it out. For container-selinux, I tried this, but it does not work too.

sudo yum install -q -y http://mirror.centos.org/centos/7/extras/x86_64/Packages/container-selinux-2.107-1.el7_6.noarch.rpm

I also tried the command provided by amazon official document

[ec2-user@ip-172-31-15-171 ~]$ sudo amazon-linux-extras install dockersudo: amazon-linux-extras: command not found

Try to install it:

[ec2-user@ip-172-31-15-171 ~]$ sudo yum install -y amazon-linux-extrasLoaded plugins: priorities, update-motd, upgrade-helperamzn-main                                                                                                                                                              | 2.1 kB  00:00:00     amzn-updates                                                                                                                                                           | 2.5 kB  00:00:00     No package amazon-linux-extras available.Error: Nothing to do

No package, what's wrong with this instance!

Frustrated. I hope for your help, please.