title: Docker: repository name must be lowercase
body: <p>Im getting errors trying to run my docker containers. I need the postgres and redis connected to my server application.</p>
  
  <pre><code>docker pull postgres
  docker rm -f syda-postgres
  docker run -p 30203:5432 --name syda-postgres -e POSTGRES_PASSWORD=password POSTGRES_USER=root POSTGRES_DB=syda postgres
  
  docker pull redis
  docker rm -f syda-inmemory
  docker run -d -p 30204:6379 --name syda-inmemory redis redis-server --appendonly yes
  
  docker pull docker.url.ee/syda/server:latest
  docker rm -f syda-server
  docker run -d -p 30202:8080 --name syda-server --link syda-postgres:postgres --link syda-inmemory:redis \docker.url.ee/syda/server:latest
  </code></pre>
  
  <p>This is the error im getting: </p>
  
  <pre><code>Error: No such container: syda-postgres
  docker: invalid reference format: repository name must be lowercase.
  See 'docker run --help'.
  Error: No such container: syda-server
  docker: Error response from daemon: could not get container for syda-postgres: No such container: syda-postgres.
  See 'docker run --help'.
  </code></pre>