/lib64/ld-linux-x86-64.so.2: No such file or directory error

Background

I am using docker to do a school project. Specifically, I pulled an ubuntu image and here is the system config:

I then logged into the docker container (ubuntu) and set up elasticsearch. When I try to run

./bin/elasticsearch

I get the following error inside the docker container's terminal

/lib64/ld-linux-x86-64.so.2: No such file or directory

I have two main confusions:

1. what does that even mean?
2. How to solve it?