From c6a427af707cfbb4eb1761a4c70bc17d529c924d Mon Sep 17 00:00:00 2001
From: Jesus Garcia <jesusd.garcia@wazuh.com>
Date: Fri, 12 Dec 2025 12:44:21 -0500
Subject: [PATCH] Update documentation of certs-gen procedure

---
 indexer-certs-creator/README.md      | 28 +++++++++++++++++++++++-----
 indexer-certs-creator/build-image.sh |  4 +++-
 2 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/indexer-certs-creator/README.md b/indexer-certs-creator/README.md
index 8ddccdf5..04808a5d 100644
--- a/indexer-certs-creator/README.md
+++ b/indexer-certs-creator/README.md
@@ -1,9 +1,27 @@
-# Certificate creation image build
+# Certificate Creation Image Build
 
-The dockerfile hosted in this directory is used to build the image used to boot Wazuh's single node and multi node stacks.
+The dockerfile hosted in this directory is used to build the image required for generating Wazuh Docker single-node and multi-node certificate files
 
-To create the image, the following command must be executed:
+## Pre-requisites
 
+### QEMU
+
+Set up QEMU to enable building multi-architecture Docker images
+
+Useful documentation:
+
+- https://www.qemu.org/download/
+- https://docs.docker.com/build/building/multi-platform/#qemu
+
+## Procedure
+
+Run the following script to build the wazuh-certs-generator docker image
+
+```console
+./build-image.sh -v <IMAGE_TAG> [-m] [-rg <REGISTRY>]
 ```
-$ docker build -t wazuh/wazuh-certs-generator:0.0.3 .
-```
+
+Replace <IMAGE_TAG> with the new image desired tag.
+Use the `-m` flag to build a multi-architecture image (supports both `amd64` and `arm64`)
+Use the `-rg <REGISTRY>` parameter to specify a custom Docker registry (default is Docker Hub)
+  By default, the script will attempt to push the image to the registry and will only work if credentials are properly configured.
diff --git a/indexer-certs-creator/build-image.sh b/indexer-certs-creator/build-image.sh
index 3fd4c386..925d15a6 100755
--- a/indexer-certs-creator/build-image.sh
+++ b/indexer-certs-creator/build-image.sh
@@ -37,7 +37,9 @@ build() {
     set +a
 
     if [ "${MULTIARCH}" ]; then
-        docker buildx bake --file build-image.yml --push --set *.platform=linux/amd64,linux/arm64 --no-cache || clean 1
+        docker buildx bake --file build-image.yml \
+            --set *.platform=linux/amd64,linux/arm64 \
+            --no-cache || clean 1
     else
         docker buildx bake --file build-image.yml --no-cache || clean 1
     fi