diff --git a/build.sh b/build.sh
index 84f7e35..9572229 100644
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/bash
+# docker run -d --name apache -p80:80 -v/root/kopano/dist:/var/www/... apache
 DOCKER_BUILDKIT=1 docker build -f kopano.dockerfile -t kopano .
 docker container prune -f
 docker create --name kopano kopano:latest
diff --git a/build2.sh b/build2.sh
new file mode 100644
index 0000000..a18d5c9
--- /dev/null
+++ b/build2.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/bash
+# docker login --username baloan --password 'yZBCUs5&@?:.'
+# docker run -d --name apache -p80:80 -v/root/kopano/dist:/var/www httpd
+export DOCKER_BUILDKIT=1
+cd ~/kopano/core; docker build -t core .
+cd ~/kopano/webapp; docker build -t webapp .
+cd ~/kopano/postfix; docker build -t postfix .
+cd ~/kopano
+# docker container prune -f
+# docker create --name kopano kopano:latest
+# docker export kopano | docker import - kopano:squashed
+# docker run -d --name kopano kopano:squashed
+# docker exec -it kopano bash
+# docker stop kopano
+# docker rm kopano
\ No newline at end of file
diff --git a/core/Dockerfile b/core/Dockerfile
new file mode 100644
index 0000000..9b2b63a
--- /dev/null
+++ b/core/Dockerfile
@@ -0,0 +1,34 @@
+# syntax=docker/dockerfile:1.3-labs
+FROM ubuntu:20.04
+# install apt packages
+RUN <<EOF 
+apt-get update -y
+export DEBIAN_FRONTEND=noninteractive 
+export TZ=Europe/Berlin 
+apt-get install -y tzdata wget xz-utils
+apt-get autoclean
+rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache ~/.npm
+EOF
+# install s6 process manager
+ADD https://github.com/just-containers/s6-overlay/releases/download/v3.1.1.2/s6-overlay-noarch.tar.xz /tmp
+ADD https://github.com/just-containers/s6-overlay/releases/download/v3.1.1.2/s6-overlay-x86_64.tar.xz /tmp
+RUN <<EOF 
+tar -C / -Jxpf /tmp/s6-overlay-noarch.tar.xz
+tar -C / -Jxpf /tmp/s6-overlay-x86_64.tar.xz
+EOF
+COPY ./etc/s6-overlay /etc/s6-overlay
+# install kopano core
+RUN <<EOF
+wget --no-verbose -P/tmp http://bldr/core-11.0.2.50.507cbae-Ubuntu_20.04-amd64.tar.gz 
+tar xzf /tmp/core-11.0.2.50.507cbae-Ubuntu_20.04-amd64.tar.gz
+for F in ~/core-11.0.2.50.507cbae-Ubuntu_20.04-amd64/*.deb; do dpkg --unpack --no-triggers $F; done
+apt-get install -f -y
+apt-get clean
+rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache ~/.npm
+rm -rf ~/core-11.0.2.50.507cbae-Ubuntu_20.04-amd64
+EOF
+# https://documentation.kopano.io/kopanocore_administrator_manual/configure_kc_components.html#configure-kopano-dagent-for-delivery-via-unix-socket
+WORKDIR /root
+EXPOSE 8443
+VOLUME /var/lib/kopano/attachments
+ENTRYPOINT ["/init"]
\ No newline at end of file
diff --git a/kopano.dockerfile b/kopano.dockerfile
index 484ed2c..6ca3e46 100644
--- a/kopano.dockerfile
+++ b/kopano.dockerfile
@@ -7,6 +7,7 @@ export DEBIAN_FRONTEND=noninteractive
 export TZ=Europe/Berlin 
 apt-get install -y tzdata z-push apache2 postfix spampd wget xz-utils
 apt-get autoclean
+rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache ~/.npm
 EOF
 # install s6 process manager
 ADD https://github.com/just-containers/s6-overlay/releases/download/v3.1.1.2/s6-overlay-noarch.tar.xz /tmp
diff --git a/mysql/docker-compose.yml b/mysql/docker-compose.yml
index 1a253de..d5ed3c7 100644
--- a/mysql/docker-compose.yml
+++ b/mysql/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '3.1'
+version: '3'
 services:
   db:
     image: mysql:latest
diff --git a/postfix/Dockerfile b/postfix/Dockerfile
new file mode 100644
index 0000000..83c98c5
--- /dev/null
+++ b/postfix/Dockerfile
@@ -0,0 +1,15 @@
+# syntax=docker/dockerfile:1.3-labs
+FROM ubuntu:20.04
+# install apt packages
+RUN <<EOF 
+apt-get update -y
+export DEBIAN_FRONTEND=noninteractive 
+export TZ=Europe/Berlin 
+apt-get install -y tzdata postfix spampd wget xz-utils
+apt-get autoclean
+rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache ~/.npm
+EOF
+WORKDIR /root
+EXPOSE 25
+VOLUME /var/spool/postfix
+ENTRYPOINT ["/usr/sbin/postmulti -i %i -p start"]
\ No newline at end of file
diff --git a/postfix/docker-compose.yml b/postfix/docker-compose.yml
new file mode 100644
index 0000000..b115b1a
--- /dev/null
+++ b/postfix/docker-compose.yml
@@ -0,0 +1,15 @@
+version: '3'
+services:
+  postfix:
+    image: postfix:latest
+    container_name: postfix
+    restart: always
+    networks:
+      - kopano
+    volumes:
+      - ~/kopano/postfix/etc:/etc/postfix
+      - spool:/var/spool/postfix
+networks:
+  - kopano
+volumes:
+  - spool:
diff --git a/webapp/Dockerfile b/webapp/Dockerfile
new file mode 100644
index 0000000..85ce856
--- /dev/null
+++ b/webapp/Dockerfile
@@ -0,0 +1,25 @@
+# syntax=docker/dockerfile:1.3-labs
+FROM ubuntu:20.04
+# install apt packages
+RUN <<EOF 
+apt-get update -y
+export DEBIAN_FRONTEND=noninteractive 
+export TZ=Europe/Berlin 
+apt-get install -y tzdata z-push apache2 wget xz-utils
+apt-get autoclean
+rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache ~/.npm
+EOF
+# install kopano webapp
+RUN <<EOF
+wget --no-verbose -P/tmp http://bldr/webapp-6.0.0.57.1049268-Ubuntu_20.04-all.tar.gz
+tar xzf /tmp/webapp-6.0.0.57.1049268-Ubuntu_20.04-all.tar.gz
+for F in ~/webapp-6.0.0.57.1049268-Ubuntu_20.04-all/*.deb; do dpkg --unpack --no-triggers $F; done
+apt-get install -f -y
+apt-get clean
+rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache ~/.npm
+rm -rf ~/webapp-6.0.0.57.1049268-Ubuntu_20.04-all
+EOF
+WORKDIR /root
+EXPOSE 80
+VOLUME /var/lib/z-push
+ENTRYPOINT ["/init"]
\ No newline at end of file