SteamCMD Ubuntu

Overview

Ubuntu 24.04 base with steamcmd preinstalled at /opt/steamcmd/, plus a /usr/local/bin/steamcmd shim for direct invocation.

Two consumers:

1. Local — interactive docker run -it --rm -v ~/steam-export:/export ghcr.io/kbve/steamcmd-ubuntu:24.04 bash to capture a Linux-flavored config.vdf for the STEAM_CONFIG_VDF GitHub secret. Steam Guard mobile auth runs once; the resulting machine token blob authenticates Linux runners on subsequent CI runs.
2. CI — ci-unity.yml’s deploy_steam job uses this image to run steamcmd +run_app_build against the demo / main app_build_<label>.vdf configs.

Image hygiene

• No credentials baked in. Each consumer brings its own config.vdf (volume mount locally, secret restore in CI).
• Self-update runs at image build time so first invocation isn’t paying the steamcmd bootstrap cost.
• lib32gcc-s1 is the only non-obvious runtime dep — steamcmd is a 32-bit Linux binary.

Local capture flow

mkdir -p ~/steam-export
docker run -it --rm -v ~/steam-export:/export ghcr.io/kbve/steamcmd-ubuntu:24.04 bash
# inside:
#   steamcmd +login h0lybyte    → password + Steam Guard mobile confirm
#   quit
#   cp /root/Steam/config/config.vdf /export/
#   exit

base64 -i ~/steam-export/config.vdf -o /tmp/steam_config.b64
gh secret set STEAM_CONFIG_VDF --repo kbve/kbve < /tmp/steam_config.b64
rm -rf /tmp/steam_config.b64 ~/steam-export

Pipeline

pipeline: docker → manifest fan-out builds + pushes to ghcr.io/kbve/steamcmd-ubuntu:24.04 whenever version here outpaces version.toml.