diff --git a/README.md b/README.md
index a611cf6..e628a0c 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,5 @@ Current goal is to rewrite README.md
 
 ## Finished sample
 
-![SC64 HW ver: 2.0 TOP](.github/sc64_v2_top.jpg | width=64)
-
-![SC64 HW ver: 2.0 BOTTOM](.github/sc64_v2_bottom.jpg | width=64)
+<img src=".github/sc64_v2_top.jpg" alt="SC64 HW ver: 2.0 PCB top" width="640" />
+<img src=".github/sc64_v2_bottom.jpg" alt="SC64 HW ver: 2.0 PCB bottom" width="640" />
diff --git a/docker_build.sh b/docker_build.sh
index 61ee533..59dd433 100755
--- a/docker_build.sh
+++ b/docker_build.sh
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-set -e
-
 BUILDER_IMAGE="ghcr.io/polprzewodnikowy/sc64env:v1.5"
 
 pushd $(dirname $0) > /dev/null
@@ -27,4 +25,10 @@ docker run \
     $BUILDER_IMAGE \
     ./build.sh $@
 
+BUILD_ERROR = $?
+
 popd > /dev/null
+
+if [ $BUILD_ERROR -ne 0 ]; then
+    exit -1
+fi