title: Unable to install docker on Amazon linux
body: <p>I'm trying to install docker on Amazon Linux Ec2 instance, I get the following error.</p>
  <p>Installing docker</p>
  <pre><code>Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
  Cleaning repos: amzn2-core amzn2extra-docker amzn2extra-lamp-mariadb10.2-php7.2 amzn2extra-php7.2 docker-ce-stable
  4 metadata files removed
  0 sqlite files removed
  0 metadata files removed
  Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
  amzn2-core                                                                                                                                                                             | 3.7 kB  00:00:00
  amzn2extra-docker                                                                                                                                                                      | 3.0 kB  00:00:00
  amzn2extra-lamp-mariadb10.2-php7.2                                                                                                                                                     | 3.0 kB  00:00:00
  amzn2extra-php7.2                                                                                                                                                                      | 3.0 kB  00:00:00
  https://download.docker.com/linux/centos/2/x86_64/stable/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found
  Trying other mirror.
  
  
   One of the configured repositories failed (Docker CE Stable - x86_64),
   and yum doesn't have enough cached data to continue. At this point the only
   safe thing yum can do is fail. There are a few ways to work &quot;fix&quot; this:
  
       1. Contact the upstream for the repository and get them to fix the problem.
  
       2. Reconfigure the baseurl/etc. for the repository, to point to a working
          upstream. This is most often useful if you are using a newer
          distribution release than is supported by the repository (and the
          packages for the previous distribution release still work).
  
       3. Run the command with the repository temporarily disabled
              yum --disablerepo=docker-ce-stable ...
  
       4. Disable the repository permanently, so yum won't use it by default. Yum
          will then just ignore the repository until you permanently enable it
          again or use --enablerepo for temporary usage:
  
              yum-config-manager --disable docker-ce-stable
          or
              subscription-manager repos --disable=docker-ce-stable
  
       5. Configure the failing repository to be skipped, if it is unavailable.
          Note that yum will try to contact the repo. when it runs most commands,
          so will have to try and fail each time (and thus. yum will be be much
          slower). If it is a very temporary problem though, this is often a nice
          compromise:
  
              yum-config-manager --save --setopt=docker-ce-stable.skip_if_unavailable=true
  
  failure: repodata/repomd.xml from docker-ce-stable: [Errno 256] No more mirrors to try.
  https://download.docker.com/linux/centos/2/x86_64/stable/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found
  Installation failed. Check that you have permissions to install.
  [root@ip-172-31-79-10 ec2-user]# ^C
  [root@ip-172-31-79-10 ec2-user]# chkconfig docker on
  error reading information on service docker: No such file or directory
  </code></pre>