diff --git a/Makefile b/Makefile
index d3cb096c..d6367a04 100644
--- a/Makefile
+++ b/Makefile
@@ -157,6 +157,9 @@ docs-dev: configure
 	@echo "Building Documentation"
 	cmake --build build/release --target=serve_docs --config=Release
 
+docker-chain-node:
+	@echo "Building docker image: lthn/chain"
+	docker build utils/docker/images/lthn-chain  -t lthn/chain $(CURDIR)
 
 clean:
 	rm -rf build
@@ -164,4 +167,4 @@ clean:
 tags:
 	ctags -R --sort=1 --c++-kinds=+p --fields=+iaS --extra=+q --language-force=C++ src contrib tests/gtest
 
-.PHONY: all release debug docs docs-dev configure static static-release test test-release test-debug clean tags conan-profile-detect $(PROFILES)
+.PHONY: all release docker-chain-node debug docs docs-dev configure static static-release test test-release test-debug clean tags conan-profile-detect $(PROFILES)
diff --git a/docs b/docs
index 93d4f46c..8149379b 160000
--- a/docs
+++ b/docs
@@ -1 +1 @@
-Subproject commit 93d4f46cdac8ba499cbb2d7819a472d66e209127
+Subproject commit 8149379b068681eb1d9664b54efe61fafc98b292
diff --git a/utils/docker/images/lthn-chain/Dockerfile b/utils/docker/images/lthn-chain/Dockerfile
index f62250c4..0a79e0cc 100644
--- a/utils/docker/images/lthn-chain/Dockerfile
+++ b/utils/docker/images/lthn-chain/Dockerfile
@@ -1,4 +1,4 @@
-# This is a multi target docker image
+# use --target=builder to return a docker image able to compile the software, probbly used with -v .:/code
 FROM ubuntu:24.04 AS builder
 LABEL authors="snider"
 
@@ -9,7 +9,7 @@ ARG BUILD_REPO=https://github.com/letheanVPN/blockchain.git
 ARG BUILD_TARGET=gcc-linux-armv8
 ARG BUILD_FOLDER=build/release
 ARG BUILD_TYPE=Release
-ARG BUILD_TESTNET=0
+ARG BUILD_TESTNET=1
 
 
 ENV CONAN_HOME=/root/sdk
@@ -56,13 +56,15 @@ RUN if [ "$BUILD_TESTNET" = "1" ]; then \
       done; \
     fi
 
-
+# use --target=build-cache to return just the cache files
 FROM scratch AS build-cache
 COPY --from=builder ${CONAN_HOME} /
 
+# use --target=build-artifacts to return the binaries
 FROM scratch AS build-artifacts
 COPY --from=builder /code/build/release/src/lethean-* /
 
+# use --target=chain-service to return a working chain node
 FROM ubuntu:24.04 AS chain-service
 
 COPY --from=build-artifacts --chmod=+x / /bin