diff --git a/helper-scripts/docker-compose.override.yml.d/BUILD_FLAGS/docker-compose.override.yml b/helper-scripts/docker-compose.override.yml.d/BUILD_FLAGS/docker-compose.override.yml
new file mode 100644
index 000000000..ac4d674c0
--- /dev/null
+++ b/helper-scripts/docker-compose.override.yml.d/BUILD_FLAGS/docker-compose.override.yml
@@ -0,0 +1,41 @@
+version: '2.1'
+services:
+  unbound-mailcow:
+    build: ./data/Dockerfiles/unbound
+
+  clamd-mailcow:
+    build: ./data/Dockerfiles/clamd
+
+  rspamd-mailcow:
+    build: ./data/Dockerfiles/rspamd
+
+  php-fpm-mailcow:
+    build: ./data/Dockerfiles/phpfpm
+
+  sogo-mailcow:
+    build: ./data/Dockerfiles/sogo
+
+  dovecot-mailcow:
+    build: ./data/Dockerfiles/dovecot
+
+  postfix-mailcow:
+    build: ./data/Dockerfiles/postfix
+
+  acme-mailcow:
+    build: ./data/Dockerfiles/acme
+
+  netfilter-mailcow:
+    build: ./data/Dockerfiles/netfilter
+
+  watchdog-mailcow:
+    build: ./data/Dockerfiles/watchdog
+
+  dockerapi-mailcow:
+    build: ./data/Dockerfiles/dockerapi
+
+  solr-mailcow:
+    build: ./data/Dockerfiles/solr
+
+  olefy-mailcow:
+    build: ./data/Dockerfiles/olefy
+
diff --git a/helper-scripts/docker-compose.override.yml.d/EXTERNAL_DNS/docker-compose.override.yml b/helper-scripts/docker-compose.override.yml.d/EXTERNAL_DNS/docker-compose.override.yml
new file mode 100644
index 000000000..74763bf23
--- /dev/null
+++ b/helper-scripts/docker-compose.override.yml.d/EXTERNAL_DNS/docker-compose.override.yml
@@ -0,0 +1,44 @@
+version: '2.1'
+services:
+
+    clamd-mailcow:
+      dns:
+        - my.resolvers.ip.addr
+
+    rspamd-mailcow:
+      dns:
+        - my.resolvers.ip.addr
+
+    php-fpm-mailcow:
+      dns:
+        - my.resolvers.ip.addr
+
+    sogo-mailcow:
+      dns:
+        - my.resolvers.ip.addr
+
+    dovecot-mailcow:
+      dns:
+        - my.resolvers.ip.addr
+
+    postfix-mailcow:
+      dns:
+        - my.resolvers.ip.addr
+
+    nginx-mailcow:
+      dns:
+        - my.resolvers.ip.addr
+
+    acme-mailcow:
+      dns:
+        - my.resolvers.ip.addr
+
+    watchdog-mailcow:
+      environment:
+        - CHECK_UNBOUND=0
+      dns:
+        - my.resolvers.ip.addr
+
+    dockerapi-mailcow:
+      dns:
+        - my.resolvers.ip.addr
diff --git a/helper-scripts/docker-compose.override.yml.d/EXTERNAL_MYSQL_SOCKET/docker-compose.override.yml b/helper-scripts/docker-compose.override.yml.d/EXTERNAL_MYSQL_SOCKET/docker-compose.override.yml
new file mode 100644
index 000000000..1f052f082
--- /dev/null
+++ b/helper-scripts/docker-compose.override.yml.d/EXTERNAL_MYSQL_SOCKET/docker-compose.override.yml
@@ -0,0 +1,31 @@
+version: '2.1'
+services:
+
+    php-fpm-mailcow:
+      volumes:
+        - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock
+
+    sogo-mailcow:
+      volumes:
+        - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock
+
+    dovecot-mailcow:
+      volumes:
+        - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock
+
+    postfix-mailcow:
+      volumes:
+        - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock
+
+    acme-mailcow:
+      volumes:
+        - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock
+
+    watchdog-mailcow:
+      volumes:
+        - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock
+
+    mysql-mailcow:
+      image: alpine:3.8
+      command: /bin/true
+      restart: "no"