Add basic entrypoint script

docker/ecs/images/Dockerfile

@@ -4,9 +4,13 @@ RUN apt-get update && \
     apt-get upgrade && \
     apt-get install \
     git && \
+    apt-get clean \ && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
     git clone https://github.com/elastic/ecs.git
 
 # Change this to a volume
 ADD docker/ecs/images/generate.sh ecs/generate.sh
+ADD docker/ecs/images/entrypoint.sh entrypoint.sh
 ADD . wazuh-indexer/
+
+ENTRYPOINT ["entrypoint.sh"]

docker/ecs/images/entrypoint.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# SPDX-License-Identifier: Apache-2.0
+# The OpenSearch Contributors require contributions made to
+# this file be licensed under the Apache-2.0 license or a
+# compatible open source license.
+
+ECS_VERSION="${ECS_VERSION:-v8.11.0}"
+INDEXER_SRC="${INDEXER_SRC:-/wazuh-indexer}"
+
+if [ -z "$ECS_DEFINITION" ]; then
+    echo "Error: ECS_DEFINITION environment variable missing."
+    exit 1
+fi
+
+bash ./generate.sh "$ECS_VERSION" "$INDEXER_SRC" "$ECS_DEFINITION"