Feature/optimization

[miaoqi]

• Updated "CMakelists.txt" in the root directory because of the recent update made on "aces_container" master branch;
• Modified "README.md" to remove the outdated usage details and add a mention of the environment variable.

[linux-foundation-easycla[bot]]

• :white_check_mark: login: antond-weta / name: Anton Dukhovnikov (32c3e8a4f6b58dffb27ecd1616954cefdaae37c1)
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