Replace poetry install method

[cofob]

Recomended way not works. Replaced to pip-method, as in Docker we have only one python version (because of this we don't need multi-version support from poetry) and pip check works correctly.

[cofob]

@PerchunPak

[PerchunPak]

Удостоверься что оно работает.

=> ERROR [6/6] RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g jshint" 2>&1                0.5s
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 > [6/6] RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g jshint" 2>&1:
#9 0.448 bash: line 1: npm: command not found
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executor failed running [/bin/sh -c su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g jshint" 2>&1]: exit code: 127