Setting docker-compose files version all to '3' so it matches and you don't get the error 'Version mismatchdocker-compose.yml specifies version 3.0 but extension file docker-compose.override.yml uses version 2.0.'

docker-compose.ci.build.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 services:
   ci-build:

docker-compose.override.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 # The default docker-compose.override file can use the "localhost" as the external name for testing web apps within the same dev machine. 
 # The ESHOP_EXTERNAL_DNS_NAME_OR_IP environment variable is taken, by default, from the ".env" file defined like: 

docker-compose.prod.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 # The Production docker-compose file has to have the external/real IPs or DNS names for the services 
 # The ESHOP_PROD_EXTERNAL_DNS_NAME_OR_IP environment variable is taken, by default, from the ".env" file defined like: 

docker-compose.vs.debug.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 services:
   basket.api:

docker-compose.vs.release.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 services:
   basket.api: