Move template to template/ dir, add CI workflow, use pre-built image

template/status.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+source "${AGENT_PATH}/common.sh"
+_check_required_env_vars "CONTAINER_NAME"
+
+APP_CONTAINER="${CONTAINER_NAME}-app-1"
+
+if ! docker ps -a --format "{{.Names}}" | grep -q "^${APP_CONTAINER}$"; then
+    echo "Unknown"
+    exit 0
+fi
+
+STATE=$(docker inspect -f '{{.State.Status}}' "$APP_CONTAINER" 2>/dev/null)
+case "$STATE" in
+    running)
+        echo "Running"
+        ;;
+    exited|stopped)
+        echo "Stopped"
+        ;;
+    *)
+        echo "Unknown"
+        ;;
+esac