diff --git a/doc/docker/development/Dockerfile b/doc/docker/development/Dockerfile
index 19c1943ab4..344e70f42e 100644
--- a/doc/docker/development/Dockerfile
+++ b/doc/docker/development/Dockerfile
@@ -7,7 +7,7 @@ FROM ubuntu:20.04
 MAINTAINER rb@egroupware.org
 
 ARG VERSION=dev-master
-ARG PHP_VERSION=7.3
+ARG PHP_VERSION=7.4
 
 # keeping build-arg in environment for entrypoint.sh
 ENV VERSION=$VERSION
@@ -50,6 +50,11 @@ RUN apt-get update \
 	&& ln -s /dev/stderr /var/log/php$PHP_VERSION-fpm.log \
 	# install tools to build EGroupware
 	&& apt-get install -y rsync npm zip curl sudo cron patch \
+	# install nodesource repo for nodejs 14.x
+	&& curl -fsSL https://deb.nodesource.com/gpgkey/nodesource.gpg.key | sudo apt-key add - \
+	&& echo "deb https://deb.nodesource.com/node_14.x $(lsb_release -s -c) main" | tee /etc/apt/sources.list.d/nodesource.list \
+	&& apt-get update \
+	&& apt-get install -y nodejs \
 	&& npm install -g grunt-cli \
 	&& bash -c \
 'EXPECTED_SIGNATURE=$(curl https://composer.github.io/installer.sig); \
diff --git a/doc/docker/development/build.sh b/doc/docker/development/build.sh
index 59fe993c90..1d1e541d08 100755
--- a/doc/docker/development/build.sh
+++ b/doc/docker/development/build.sh
@@ -3,11 +3,11 @@
 REPO=egroupware
 IMAGE=development
 BASE=ubuntu:20.04
-RECOMMENDED_PHP_VERSION=7.3
+RECOMMENDED_PHP_VERSION=7.4
 
-PHP_VERSION=${1:-7.3}
+PHP_VERSION=${1:-7.4}
 
-TAG=$(docker run --rm -i --entrypoint bash $REPO/$IMAGE -c "apt update && apt search php$PHP_VERSION-fpm" 2>/dev/null|grep php$PHP_VERSION-fpm|sed "s|^php$PHP_VERSION-fpm/focal.*\([78]\.[0-9]*\.[0-9]*\).*|\1|g")
+TAG=$(docker run --rm -i --entrypoint bash $REPO/$IMAGE:$PHP_VERSION -c "apt update && apt search php$PHP_VERSION-fpm" 2>/dev/null|grep php$PHP_VERSION-fpm|sed "s|^php$PHP_VERSION-fpm/focal.*\([78]\.[0-9]*\.[0-9]*\).*|\1|g")
 test -z "$TAG" && {
 	echo "Can't get new tag of $REPO/$IMAGE container --> existing"
 	exit 1
diff --git a/doc/docker/development/entrypoint.sh b/doc/docker/development/entrypoint.sh
index 7c634dd0cd..1cddfad852 100755
--- a/doc/docker/development/entrypoint.sh
+++ b/doc/docker/development/entrypoint.sh
@@ -2,7 +2,7 @@
 set -ex
 
 VERSION=${VERSION:-dev-master}
-PHP_VERSION=${PHP_VERSION:-7.3}
+PHP_VERSION=${PHP_VERSION:-7.4}
 
 # if EGW_SESSION_TIMEOUT is set in environment, propagate value to php.ini
 test -n "$EGW_SESSION_TIMEOUT" && test "$EGW_SESSION_TIMEOUT" -ge 1440 &&