debian: Preinstall build requirements in docker helper

Tracked-On: #6688
Signed-off-by: Helmut Buchsbaum <helmut.buchsbaum@opensource.tttech-industrial.com>

debian/docker/Dockerfile

@@ -209,6 +209,9 @@ RUN NEEDEDVERSION="20200925"; \
 # the final image
 FROM ${VENDOR}:${DISTRO}
 
+ARG VENDOR
+ARG DISTRO
+
 ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get -y update && \
@@ -228,6 +231,17 @@ RUN apt-get -y update && apt-get install -y --no-install-recommends \
     apt-utils \
     sudo
 
+###############################################################################
+# pre-install build dependencies
+COPY debian-control-${VENDOR}-${DISTRO} /tmp/debian-control
+RUN tmpdir=$(mktemp -d) && cd ${tmpdir} && \
+    mk-build-deps --tool='apt-get -o Debug::pkgProblemResolver=yes --no-install-recommends --yes' --install /tmp/debian-control && \
+    cd / && rm -rf ${tmpdir}
+
+###############################################################################
+# cleanup apt cache
+RUN apt-get clean && rm -rf /var/lib/apt/lists/*
+
 
 ###############################################################################
 # Mount the topdir of the Debian git repository at /source

debian/docker/acrn-docker-build.sh

@@ -28,11 +28,13 @@ fi
 
 set -e
 # create docker image for Debian package build
+cp debian/control debian/docker/debian-control-${VENDOR}-${DISTRO}
 ${DOCKER} build \
     -f debian/docker/Dockerfile \
     --build-arg DISTRO=${DISTRO} \
     --build-arg VENDOR=${VENDOR} \
     -t acrn-pkg-builder:${DISTRO} debian/docker
+rm debian/docker/debian-control-${VENDOR}-${DISTRO}
 
 # build ACRN packages
 ${DOCKER} run \