feat(docker): core compose + entrypoint (MS22-P1j) (#613)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

docker/openclaw-entrypoint.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+set -e
+: "${MOSAIC_API_URL:?MOSAIC_API_URL is required}"
+: "${AGENT_TOKEN:?AGENT_TOKEN is required}"
+: "${AGENT_ID:?AGENT_ID is required}"
+
+echo "[entrypoint] Fetching config for agent ${AGENT_ID}..."
+HTTP_CODE=$(curl -sf -w "%{http_code}" \
+  "${MOSAIC_API_URL}/api/internal/agent-config/${AGENT_ID}" \
+  -H "Authorization: Bearer ${AGENT_TOKEN}" \
+  -o /tmp/openclaw.json)
+
+if [ "$HTTP_CODE" != "200" ]; then
+  echo "[entrypoint] ERROR: Config fetch failed with HTTP ${HTTP_CODE}"
+  exit 1
+fi
+
+echo "[entrypoint] Config loaded. Starting OpenClaw gateway..."
+export OPENCLAW_CONFIG_PATH=/tmp/openclaw.json
+exec openclaw gateway run --bind lan --auth token