diff --git a/Containers/apache/start.sh b/Containers/apache/start.sh
index 49270210..560dd84e 100644
--- a/Containers/apache/start.sh
+++ b/Containers/apache/start.sh
@@ -18,7 +18,8 @@ while ! nc -z "$NEXTCLOUD_HOST" 9000; do
 done
 
 # Get ipv4-address of Apache
-IPv4_ADDRESS="$(dig nextcloud-aio-apache A +short +search | head -1)"
+# shellcheck disable=SC2153
+IPv4_ADDRESS="$(dig "$APACHE_HOST" A +short +search | head -1)"
 # Bring it in CIDR notation
 # shellcheck disable=SC2001
 IPv4_ADDRESS="$(echo "$IPv4_ADDRESS" | sed 's|[0-9]\+$|1/32|')"
diff --git a/Containers/talk/start.sh b/Containers/talk/start.sh
index 37d2682e..e73525b8 100644
--- a/Containers/talk/start.sh
+++ b/Containers/talk/start.sh
@@ -20,8 +20,10 @@ fi
 
 set -x
 IPv4_ADDRESS_TALK_RELAY="$(hostname -i | grep -oP '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+' | head -1)"
-IPv4_ADDRESS_TALK="$(dig nextcloud-aio-talk IN A +short +search | grep '^[0-9.]\+$' | sort | head -n1)"
-IPv6_ADDRESS_TALK="$(dig nextcloud-aio-talk AAAA +short +search | grep '^[0-9a-f:]\+$' | sort | head -n1)"
+# shellcheck disable=SC2153
+IPv4_ADDRESS_TALK="$(dig "$TALK_HOST" IN A +short +search | grep '^[0-9.]\+$' | sort | head -n1)"
+# shellcheck disable=SC2153
+IPv6_ADDRESS_TALK="$(dig "$TALK_HOST" AAAA +short +search | grep '^[0-9a-f:]\+$' | sort | head -n1)"
 set +x
 
 if [ -n "$IPv4_ADDRESS_TALK" ] && [ "$IPv4_ADDRESS_TALK_RELAY" = "$IPv4_ADDRESS_TALK" ]; then
diff --git a/php/containers.json b/php/containers.json
index fd1e137e..a8669744 100644
--- a/php/containers.json
+++ b/php/containers.json
@@ -29,6 +29,7 @@
       "environment": [
         "NC_DOMAIN=%NC_DOMAIN%",
         "NEXTCLOUD_HOST=nextcloud-aio-nextcloud",
+        "APACHE_HOST=nextcloud-aio-apache",
         "COLLABORA_HOST=nextcloud-aio-collabora",
         "TALK_HOST=nextcloud-aio-talk",
         "APACHE_PORT=%APACHE_PORT%",
@@ -376,6 +377,7 @@
       "internal_port": "%TALK_PORT%",
       "environment": [
         "NC_DOMAIN=%NC_DOMAIN%",
+        "TALK_HOST=nextcloud-aio-talk",
         "TURN_SECRET=%TURN_SECRET%",
         "SIGNALING_SECRET=%SIGNALING_SECRET%",
         "TZ=%TIMEZONE%",