diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 4b80b2b28de46ed3b9c43f6050405b4f6f635eab..0000000000000000000000000000000000000000
--- a/Dockerfile
+++ /dev/null
@@ -1,25 +0,0 @@
-
-FROM centos:7
-
-ENV LC_ALL en_US.utf8
-
-RUN yum -y install procps
-
-RUN mkdir -p /var/log/fod /srv
-COPY . /srv/flowspy
-#COPY supervisord-centos.conf /srv/flowspy/supervisord.conf
-
-RUN rm -rf /srv/flowspy/venv/
-
-RUN (cd /srv/flowspy; ./install-centos.sh;)
-
-#  echo "To set environment to English, run: export LC_ALL=en_US"
-#  echo "To activate virualenv: source /srv/venv/bin/activate"
-#  echo "To create a user run: cd /srv/flowspy; ./manage.py createsuperuser"
-#  echo "To start flowspy server: cd /srv/flowspy; ./manage.py runserver 0.0.0.0:8000"
-#  echo "To start celeryd: cd /srv/flowspy; ./manage.py celeryd"
-
-EXPOSE 8000
-
-CMD [ "/srv/flowspy/runfod.sh" ]
-
diff --git a/Dockerfile b/Dockerfile
new file mode 120000
index 0000000000000000000000000000000000000000..440b222c2252e208262c91f38df00e273dbe54d4
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1 @@
+Dockerfile.fod.debian
\ No newline at end of file
diff --git a/Dockerfile.fod.centos.new b/Dockerfile.fod.centos.new
new file mode 100644
index 0000000000000000000000000000000000000000..d5ca319ddb004d3223de0888330b42c4e6bdc580
--- /dev/null
+++ b/Dockerfile.fod.centos.new
@@ -0,0 +1,72 @@
+
+# doc: to build+run: docker build -f Dockerfile.fod.centos -t fod.centos && docker run -ti fod.centos
+
+#############################################################################
+#############################################################################
+
+FROM centos:7
+
+#############################################################################
+
+ENV LC_ALL en_US.utf8
+
+RUN yum -y install procps # somehow needed for centos repo installation in ./install-centos.sh
+
+#############################################################################
+
+# uncomment, for running under systemd
+#RUN apt-get update -y -y && centos_FRONTEND="noninteractive" apt-get install -y -y systemd-sysv systemd 
+
+#############################################################################
+
+# typically useful tools for investigation
+#RUN apt-get update -y -y && centos_FRONTEND="noninteractive" apt-get install -y -y git less man make gcc strace ltrace lsof file vim tshark tcpdump curl wget net-tools sudo psutils procps iptables iputils-ping iputils-tracepath hping3 iproute2 
+
+#############################################################################
+#############################################################################
+# fod installation
+
+WORKDIR /srv/flowspy
+
+###############################
+# fod installation step1
+
+COPY . /srv/flowspy
+RUN rm -rf /srv/flowspy/venv
+
+COPY install-*.sh requirement*.txt /srv/flowspy/
+
+# only install system+python deps (for quicker rebuilding by exploiting the docker cache for this step1):
+#RUN ./install-centos.sh --basesw --here --systemd --systemd_only_install
+RUN bash ./install-centos.sh --basesw --here --supervisord 
+
+###############################
+# fod installation step2 
+
+COPY . /srv/flowspy
+#RUN rm -rf /srv/flowspy/venv
+
+#RUN bash ./install-centos.sh --fodproper --here --supervisord --setup_admin_user --setup_admin_user5 admin adminpwd admin@localhost.local testpeer 0.0.0.0/0 --exabgp 10.3.10.3 10.3.10.3 1001 10.3.10.10 10.3.10.10 2001
+#RUN bash ./install-centos.sh --both --here --supervisord --setup_admin_user --setup_admin_user5 admin adminpwd admin@localhost.local testpeer 0.0.0.0/0 --exabgp 172.17.0.2 172.17.0.2 1001 172.17.0.3 172.17.0.3 3001
+#RUN bash ./install-centos.sh --both --here --systemd --systemd_only_install --setup_admin_user --setup_admin_user5 admin adminpwd admin@localhost.local testpeer 0.0.0.0/0 # --exabgp 172.17.0.2 172.17.0.2 1001 172.17.0.3 172.17.0.3 3001
+RUN ./install-centos.sh --fodproper --here --supervisord --setup_admin_user --setup_admin_user5 admin adminpwd admin@localhost.local testpeer 0.0.0.0/0 # --exabgp 172.17.0.2 172.17.0.2 1001 172.17.0.3 172.17.0.3 3001
+
+###############################
+
+# potential standalone re-setup of exabgp later (e.g., to exploit docker build cache for the actual installation step(s) above)
+#RUN cd /opt/FOD/ && ./exabgp/run-exabgp-generic --init-conf 10.3.10.3 10.3.10.3 1001 10.3.10.10 10.3.10.12 3001 -- --systemd
+
+#############################################################################
+#############################################################################
+# running fod
+
+EXPOSE 8000
+
+# if running under systemd
+#CMD [ "/sbin/init" ]
+
+CMD [ "/srv/flowspy/runfod.sh" ]
+
+#############################################################################
+#############################################################################
+
diff --git a/Dockerfile.fod.centos.old b/Dockerfile.fod.centos.old
new file mode 100644
index 0000000000000000000000000000000000000000..4b80b2b28de46ed3b9c43f6050405b4f6f635eab
--- /dev/null
+++ b/Dockerfile.fod.centos.old
@@ -0,0 +1,25 @@
+
+FROM centos:7
+
+ENV LC_ALL en_US.utf8
+
+RUN yum -y install procps
+
+RUN mkdir -p /var/log/fod /srv
+COPY . /srv/flowspy
+#COPY supervisord-centos.conf /srv/flowspy/supervisord.conf
+
+RUN rm -rf /srv/flowspy/venv/
+
+RUN (cd /srv/flowspy; ./install-centos.sh;)
+
+#  echo "To set environment to English, run: export LC_ALL=en_US"
+#  echo "To activate virualenv: source /srv/venv/bin/activate"
+#  echo "To create a user run: cd /srv/flowspy; ./manage.py createsuperuser"
+#  echo "To start flowspy server: cd /srv/flowspy; ./manage.py runserver 0.0.0.0:8000"
+#  echo "To start celeryd: cd /srv/flowspy; ./manage.py celeryd"
+
+EXPOSE 8000
+
+CMD [ "/srv/flowspy/runfod.sh" ]
+
diff --git a/Dockerfile.fod.debian b/Dockerfile.fod.debian
new file mode 100644
index 0000000000000000000000000000000000000000..0de94a6bd3715f25c103566347e307ed956085af
--- /dev/null
+++ b/Dockerfile.fod.debian
@@ -0,0 +1,72 @@
+
+# doc: to build+run: docker build -f Dockerfile.fod.debian -t fod.debian && docker run -ti fod.debian
+
+#############################################################################
+#############################################################################
+
+FROM debian:latest
+
+RUN apt-get -qqy update
+
+#############################################################################
+
+RUN echo -e 'LANG="en_US.UTF-8"\nLANGUAGE="en_US"\n' > /etc/default/locale && echo "en_US.utf8 UTF-8" >> /etc/locale.gen && apt-get -qqy install locales
+
+ENV LC_ALL en_US.utf8
+
+#############################################################################
+
+# uncomment, for running under systemd
+#RUN apt-get update -y -y && DEBIAN_FRONTEND="noninteractive" apt-get install -y -y systemd-sysv systemd 
+
+#############################################################################
+
+# typically useful tools for investigation
+#RUN apt-get update -y -y && DEBIAN_FRONTEND="noninteractive" apt-get install -y -y git less man make gcc strace ltrace lsof file vim tshark tcpdump curl wget net-tools sudo psutils procps iptables iputils-ping iputils-tracepath hping3 iproute2 
+
+#############################################################################
+#############################################################################
+# fod installation
+
+WORKDIR /srv/flowspy
+
+###############################
+# fod installation step1
+
+COPY install-*.sh requirement*.txt /srv/flowspy/
+
+# only install system+python deps (for quicker rebuilding by exploiting the docker cache for this step1):
+#RUN ./install-debian.sh --basesw --here --systemd --systemd_only_install
+RUN ./install-debian.sh --basesw --here --supervisord 
+
+###############################
+# fod installation step2 
+
+COPY . /srv/flowspy
+RUN rm -rf /srv/flowspy/venv
+
+# to be sure, try again to install newest deps, i.e., use --both instead of just --fodproper:
+#RUN ./install-debian.sh --fodproper --here --supervisord --setup_admin_user --setup_admin_user5 admin adminpwd admin@localhost.local testpeer 0.0.0.0/0 --exabgp 10.3.10.3 10.3.10.3 1001 10.3.10.10 10.3.10.10 2001
+#RUN ./install-debian.sh --both --here --supervisord --setup_admin_user --setup_admin_user5 admin adminpwd admin@localhost.local testpeer 0.0.0.0/0 --exabgp 172.17.0.2 172.17.0.2 1001 172.17.0.3 172.17.0.3 3001
+#RUN ./install-debian.sh --both --here --systemd --systemd_only_install --setup_admin_user --setup_admin_user5 admin adminpwd admin@localhost.local testpeer 0.0.0.0/0 # --exabgp 172.17.0.2 172.17.0.2 1001 172.17.0.3 172.17.0.3 3001
+RUN ./install-debian.sh --both --here --supervisord --setup_admin_user --setup_admin_user5 admin adminpwd admin@localhost.local testpeer 0.0.0.0/0 # --exabgp 172.17.0.2 172.17.0.2 1001 172.17.0.3 172.17.0.3 3001
+
+###############################
+
+# potential standalone re-setup of exabgp later (e.g., to exploit docker build cache for the actual installation step(s) above)
+#RUN cd /opt/FOD/ && ./exabgp/run-exabgp-generic --init-conf 10.3.10.3 10.3.10.3 1001 10.3.10.10 10.3.10.12 3001 -- --systemd
+
+#############################################################################
+#############################################################################
+# running fod
+
+EXPOSE 8000
+
+# if running under systemd
+#CMD [ "/sbin/init" ]
+
+CMD [ "/srv/flowspy/runfod.sh" ]
+
+#############################################################################
+#############################################################################
+
diff --git a/install-centos-fixcentos-sqlite.sh b/install-centos-fixcentos-sqlite.sh
index 2416d1320c15a437e5b98e5ab37015d0bdd8a331..02d0a00b034de008caedb4216308953de1d102c4 100755
--- a/install-centos-fixcentos-sqlite.sh
+++ b/install-centos-fixcentos-sqlite.sh
@@ -17,7 +17,7 @@ if cat /etc/centos-release | grep -q "release 7."; then
 
     yum install -y make
     #cd ~ && curl https://www.sqlite.org/2020/sqlite-autoconf-3320100.tar.gz > sqlite-autoconf-3320100.tar.gz && tar xvfz sqlite-autoconf-3320100.tar.gz && cd sqlite-autoconf-3320100 && ./configure && make && make install
-    cd ~ && curl https://www.sqlite.org/2023/sqlite-autoconf-3410200.tar.gz > sqlite-autoconf.tar.gz && tar xvfz sqlite-autoconftar.gz && cd sqlite-autoconf-3410200 && ./configure && make && make install
+    cd ~ && curl https://www.sqlite.org/2023/sqlite-autoconf-3410200.tar.gz > sqlite-autoconf.tar.gz && tar xvfz sqlite-autoconf.tar.gz && cd sqlite-autoconf-3410200 && ./configure && make && make install
 
     ##
 
diff --git a/install-centos.sh b/install-centos.sh
index 72fc1658d055c1b0eede9aada4a1a5727d8dc488..0ef3282a4fb980717ea1927eb648e31a5359b1b1 100755
--- a/install-centos.sh
+++ b/install-centos.sh
@@ -138,7 +138,6 @@ while [ $# -gt 0 ]; do
   elif [ $# -ge 1 -a "$1" = "--no_systemd" ]; then
     shift 1
     install_systemd_services=0
- else
   elif [ $# -ge 1 -a "$1" = "--setup_admin_user" ]; then
     shift 1
      setup_adminuser=1
@@ -305,6 +304,8 @@ if [ "$install_fodproper" = 0 ]; then
   set -e
 
   echo "Setup partial python environment for FoD"
+
+  (ls -la "$venv_dir" 1>&2 || true)
   if [ -x pyvenv ]; then
     #pyvenv /srv/venv
     pyvenv "$venv_dir"
diff --git a/runfod.sh b/runfod.sh
index 82969602e23293980f1758d7e9b58f06df069dbd..8cb3e5bcdae254cd5225a5000943bccc69f03eea 100755
--- a/runfod.sh
+++ b/runfod.sh
@@ -6,7 +6,22 @@ fi
 
 #
 
-if [ "$FOD_RUNMODE" = "via_supervisord" ]; then
+if [ "$FOD_RUNMODE" = "via_systemd" ]; then
+  echo "$0: using runmode via_systemd, nothing todo" 1>&2
+
+  SYSTEMD_COLORS=1 systemctl status "fod-gunicorn" | cat
+  echo
+
+  SYSTEMD_COLORS=1 systemctl status "fod-celeryd" | cat
+  echo
+
+  SYSTEMD_COLORS=1 systemctl status "redis" | cat
+  echo
+
+  SYSTEMD_COLORS=1 systemctl status "exabgpForFod" | cat
+  echo
+
+elif [ "$FOD_RUNMODE" = "via_supervisord" ]; then
   echo "$0: using runmode via_supervisord" 1>&2
   exec ./runfod-supervisord.sh "$@"
 else