Proxy Configuration

If your environment requires an outbound proxy, Butler Sheet Icons (BSI) can use standard proxy environment variables. This is useful when BSI needs Internet access (for example, downloading a browser on first run) or when your infrastructure routes outbound traffic through a proxy.

Supported variables:

• http_proxy
• https_proxy

Set these before starting BSI (binary or Docker). Examples below are sourced from the original project README.

Set proxy variables

Bash

# Linux/macOS
export http_proxy='http://username:password@proxy.example.com:port'
export https_proxy='http://username:password@proxy.example.com:port'

PowerShell

# Windows/PowerShell
$env:http_proxy = 'http://username:password@proxy.example.com:port'
$env:https_proxy = 'http://username:password@proxy.example.com:port'

Using Docker

Pass the proxy variables into the container with -e or --env-file.

docker run --rm \
  -e http_proxy='http://username:password@proxy.example.com:port' \
  -e https_proxy='http://username:password@proxy.example.com:port' \
  -v "$(pwd)/images:/nodeapp/img" \
  ptarmiganlabs/butler-sheet-icons:latest \
  qscloud create-sheet-thumbnails \
    --imagedir ./img \
    --headless true

Notes

• The proxy variables affect outbound network calls made by BSI and the embedded browser downloads.
• Clear or override the variables if not needed in certain contexts.
• For CI/CD usage, see the CI/CD Integration page’s proxy section.

See also

• Environment Variables
• Docker Usage