diff --git a/Dockerfile b/Dockerfile
index 35f1628c1cffb..d406230d91a7e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1403,7 +1403,6 @@ COPY <<"EOF" /install_yarn_dependencies_from_branch_tip.sh
 
 : "${AIRFLOW_REPO:?Should be set}"
 : "${AIRFLOW_BRANCH:?Should be set}"
-: "${AIRFLOW_SOURCES:?Should be set}"
 
 function install_yarn_dependencies_from_branch_tip() {
     echo
@@ -1621,7 +1620,7 @@ RUN bash /scripts/docker/install_packaging_tools.sh; \
 
 # We are installing Yarn dependencies here to make sure they are cached in the layer
 RUN if [[ ${AIRFLOW_PRE_CACHED_YARN_PACKAGES} == "true" ]]; then \
-        bash /install_yarn_dependencies_from_branch_tip.sh; \
+        bash /scripts/docker/install_yarn_dependencies_from_branch_tip.sh; \
     fi
 
 
diff --git a/Dockerfile.ci b/Dockerfile.ci
index 3f07bcb584a45..0a42d15e87603 100644
--- a/Dockerfile.ci
+++ b/Dockerfile.ci
@@ -1178,7 +1178,6 @@ COPY <<"EOF" /install_yarn_dependencies_from_branch_tip.sh
 
 : "${AIRFLOW_REPO:?Should be set}"
 : "${AIRFLOW_BRANCH:?Should be set}"
-: "${AIRFLOW_SOURCES:?Should be set}"
 
 function install_yarn_dependencies_from_branch_tip() {
     echo
@@ -1390,7 +1389,7 @@ RUN bash /scripts/docker/install_packaging_tools.sh; \
 
 # We are installing Yarn dependencies here to make sure they are cached in the layer
 RUN if [[ ${AIRFLOW_PRE_CACHED_YARN_PACKAGES} == "true" ]]; then \
-        bash /install_yarn_dependencies_from_branch_tip.sh; \
+        bash /scripts/docker/install_yarn_dependencies_from_branch_tip.sh; \
     fi
 
 # Here we fix the versions so all subsequent commands will use the versions
diff --git a/scripts/docker/install_yarn_dependencies_from_branch_tip.sh b/scripts/docker/install_yarn_dependencies_from_branch_tip.sh
index 67b825a3387ed..3adcf695b2128 100644
--- a/scripts/docker/install_yarn_dependencies_from_branch_tip.sh
+++ b/scripts/docker/install_yarn_dependencies_from_branch_tip.sh
@@ -29,7 +29,6 @@
 
 : "${AIRFLOW_REPO:?Should be set}"
 : "${AIRFLOW_BRANCH:?Should be set}"
-: "${AIRFLOW_SOURCES:?Should be set}"
 
 function install_yarn_dependencies_from_branch_tip() {
     echo