Cli: fix docker run on linux

[nicoloboschi]

Changes:

• Set generated files readable for every user to avoid permissions error. The files are copied to $HOME/.langstream/tmp directory which is protected to other unix machine users but still readable from the container
• Improve the installation script error message

After these changes, I successfully setup an amazon linux machine to run langstream (I'll add it to the doc):

sudo yum update
sudo yum install -y docker jq unzip  java-11-amazon-corretto-headless
sudo usermod -a -G docker ec2-user
id ec2-user
newgrp docker
sudo systemctl enable docker.service
sudo systemctl start docker.service
curl -Ls "https://raw.githubusercontent.com/LangStream/langstream/main/bin/get-cli.sh" | bash
source ~/.bashrc
export OPEN_AI_ACCESS_KEY=your-key-here
langstream docker run test -app https://github.com/LangStream/langstream/blob/main/examples/applications/openai-completions -s https://github.com/LangStream/langstream/blob/main/examples/secrets/secrets.yaml

[nicoloboschi]

This might be a better solution https://stackoverflow.com/a/57776923/7309769

[eolivelli]

can we log this only if there are "temporary files"

[nicoloboschi]

done

[eolivelli]

use a Concurrent set, this structure is accessed from multiple thread

[nicoloboschi]

done