diff --git a/contrib/docker/Dockerfile.ubuntu b/contrib/docker/Dockerfile.ubuntu
index 35d1f930c..93ffee4b6 100644
--- a/contrib/docker/Dockerfile.ubuntu
+++ b/contrib/docker/Dockerfile.ubuntu
@@ -31,6 +31,9 @@ RUN apt-get -qq update && \
     build-essential libssl-dev libffi-dev \
     python3-dev cargo
 
+# move the script in the root of the directory
+RUN cp contrib/docker/scripts/*.sh .
+
 RUN ls -la
 
 CMD ["./contrib/docker/scripts/entrypoint.sh"]
diff --git a/contrib/docker/scripts/build.sh b/contrib/docker/scripts/build.sh
index 3f41cc594..1650e793c 100755
--- a/contrib/docker/scripts/build.sh
+++ b/contrib/docker/scripts/build.sh
@@ -29,12 +29,8 @@ poetry install
 git clone https://github.com/lightningnetwork/lightning-rfc.git ../lightning-rfc
 git submodule update --init --recursive
 
-# Used in docker image
-cd /work || return
-ls -la
-
 ./configure CC="$CC"
-# cat config.vars
+cat config.vars
 
 cat << EOF > pytest.ini
 [pytest]
diff --git a/contrib/docker/scripts/entrypoint.sh b/contrib/docker/scripts/entrypoint.sh
index 83f2410c4..28e4f5bc2 100755
--- a/contrib/docker/scripts/entrypoint.sh
+++ b/contrib/docker/scripts/entrypoint.sh
@@ -1,3 +1,3 @@
 #!/bin/bash
-cd contrib/docker/scripts && \
-    ./setup.sh && ./build.sh
+./setup.sh
+./build.sh
diff --git a/external/lnprototest b/external/lnprototest
index ceeb8667f..433d22f16 160000
--- a/external/lnprototest
+++ b/external/lnprototest
@@ -1 +1 @@
-Subproject commit ceeb8667f745fce80ba81e4b23c6717d72e22bbc
+Subproject commit 433d22f16c3f550317315ce56a445e6d074a0f5a