diff --git a/docs/help/testing-live.md b/docs/help/testing-live.md
index 18a0566f6dc..08fe18bc617 100644
--- a/docs/help/testing-live.md
+++ b/docs/help/testing-live.md
@@ -120,7 +120,7 @@ openclaw models list --json
   - `OPENCLAW_LIVE_CLI_BACKEND_MODEL="codex-cli/gpt-5.2"`
   - `OPENCLAW_LIVE_CLI_BACKEND_COMMAND="/full/path/to/codex"`
   - `OPENCLAW_LIVE_CLI_BACKEND_ARGS='["exec","--json","--color","never","--sandbox","read-only","--skip-git-repo-check"]'`
-  - `OPENCLAW_LIVE_CLI_BACKEND_IMAGE_PROBE=1` to send a real image attachment (paths are injected into the prompt).
+  - `OPENCLAW_LIVE_CLI_BACKEND_IMAGE_PROBE=1` to send a real image attachment (paths are injected into the prompt). Docker recipes default this off unless explicitly requested.
   - `OPENCLAW_LIVE_CLI_BACKEND_IMAGE_ARG="--image"` to pass image file paths as CLI args instead of prompt injection.
   - `OPENCLAW_LIVE_CLI_BACKEND_IMAGE_MODE="repeat"` (or `"list"`) to control how image args are passed when `IMAGE_ARG` is set.
   - `OPENCLAW_LIVE_CLI_BACKEND_RESUME_PROBE=1` to send a second turn and validate resume flow.
diff --git a/scripts/test-live-cli-backend-docker.sh b/scripts/test-live-cli-backend-docker.sh
index b7bf8b9bf24..2fe48a45149 100644
--- a/scripts/test-live-cli-backend-docker.sh
+++ b/scripts/test-live-cli-backend-docker.sh
@@ -74,6 +74,7 @@ if [[ "$CLI_PROVIDER" == "claude-cli" && -z "$CLI_DISABLE_MCP_CONFIG" ]]; then
   fi
 fi
 export OPENCLAW_LIVE_CLI_BACKEND_MODEL_SWITCH_PROBE="${OPENCLAW_LIVE_CLI_BACKEND_MODEL_SWITCH_PROBE:-0}"
+export OPENCLAW_LIVE_CLI_BACKEND_IMAGE_PROBE="${OPENCLAW_LIVE_CLI_BACKEND_IMAGE_PROBE:-0}"
 export OPENCLAW_LIVE_CLI_BACKEND_MCP_PROBE="${OPENCLAW_LIVE_CLI_BACKEND_MCP_PROBE:-0}"
 
 cleanup_temp_dirs() {