Fetch games into a volume at runtime instead of baking them into the image

927MB of the image was just t7g's two CD ISOs, which can't be meaningfully
compressed (already-compressed FMV/audio). Move the smbget/unzip step out
of the Dockerfile and into scripts/fetch_games.sh, run from server.sh on
container start: it populates GAMES_HOME on first run and skips the fetch
if games are already present. run.sh mounts a named volume so the games
survive --rm restarts instead of being re-downloaded every time. Image
drops from 1.6GB to ~690MB; first container start now needs network access
to the vlda-01 SMB share to seed the volume.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NiNnj78HGx1KWyCCo39HSz

scripts/fetch_games.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -e
+
+SMB_BASE="smb://vlda-01/software/Games/dosbox"
+GAME_ZIPS="stuntcar.zip t7g.zip"
+
+if [ -n "$(ls -A "${GAMES_HOME}" 2>/dev/null)" ]; then
+    echo "Games already present in ${GAMES_HOME}, skipping fetch"
+    exit 0
+fi
+
+echo "Fetching games into ${GAMES_HOME}..."
+TMPDIR=$(mktemp -d)
+trap 'rm -rf "${TMPDIR}"' EXIT
+
+cd "${TMPDIR}"
+for zip in ${GAME_ZIPS}; do
+    smbget -au "${SMB_BASE}/${zip}"
+done
+unzip -o -d "${GAMES_HOME}" "*.zip"

scripts/server.sh

@@ -4,6 +4,8 @@ set -x
 RFB_PORT=59${DISPLAY_NUM}
 NOVNC_PORT=80${DISPLAY_NUM}
 
+${SCRIPTS_HOME}/fetch_games.sh
+
 echo Display at ${DISPLAY} with ${SCREEN_W}x${SCREEN_H}x24
 Xvnc ${DISPLAY} -geometry ${SCREEN_W}x${SCREEN_H} -depth 24 +xinerama -securitytypes none >/var/log/xvfb.log &
 fluxbox &