diff --git a/resources/Dockerfile b/resources/Dockerfile
index 7520d7106..ecdf41957 100644
--- a/resources/Dockerfile
+++ b/resources/Dockerfile
@@ -15,11 +15,12 @@ ARG CARGO_GIT_REGISTRY_DIR="$CLH_BUILD_DIR/cargo_git_registry"
 ENV CARGO_HOME=/usr/local/rust
 ENV RUSTUP_HOME=$CARGO_HOME
 ENV PATH="$PATH:$CARGO_HOME/bin"
+ENV DEBIAN_FRONTEND=noninteractive
 
 # Install all CI dependencies
 RUN apt-get update \
         && apt-get -yq upgrade \
-        && DEBIAN_FRONTEND=noninteractive apt-get install -yq \
+        && apt-get install -yq \
         build-essential \
         bc \
         curl \
@@ -60,7 +61,7 @@ RUN update-alternatives --set ovs-vswitchd /usr/lib/openvswitch-switch-dpdk/ovs-
 RUN if [ "$TARGETARCH" = "amd64" ]; then \
         apt-get update \
         && apt-get -yq upgrade \
-        && DEBIAN_FRONTEND=noninteractive apt-get install -yq gcc-multilib gawk \
+        && apt-get install -yq gcc-multilib gawk \
         libtool expect gnutls-dev gnutls-bin libfuse-dev \
         libjson-glib-dev libgmp-dev libtasn1-dev python3-twisted \
         net-tools softhsm2 \
@@ -74,7 +75,7 @@ RUN if [ "$TARGETARCH" = "arm64" ]; then \
         # kernel (any version) image in `/boot` and modules in `/lib/modules`.
         apt-get update \
         && apt-get -yq upgrade \
-        && DEBIAN_FRONTEND=noninteractive apt-get install -yq \
+        && apt-get install -yq \
         libcap2-bin \
         libguestfs-tools \
         linux-image-generic \