Docker-compose: Remove obsolete version field

docker/docker-compose-api-policy-source-example.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

docker/docker-compose-example-cedar.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

docker/docker-compose-example.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

docker/docker-compose-git-webhook.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

docker/docker-compose-scopes-example.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   redis:
     image: redis

docker/docker-compose-with-callbacks.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

docker/docker-compose-with-kafka-example.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 
 services:
   # Based on: https://developer.confluent.io/quickstart/kafka-docker/

docker/docker-compose-with-oauth-initial.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

docker/docker-compose-with-rate-limiting.yml

@@ -1,5 +1,4 @@
 # This docker compose example shows how to configure OPAL's rate limiting feature
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

docker/docker-compose-with-security.yml

@@ -1,6 +1,5 @@
 # this docker compose file is relying on external environment variables!
 # run it by running the script: ./run-example-with-security.sh
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

docker/docker-compose-with-statistics.yml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   # When scaling the opal-server to multiple nodes and/or multiple workers, we use
   # a *broadcast* channel to sync between all the instances of opal-server.

documentation/docs/getting-started/quickstart/docker-compose-config/overview.mdx

@@ -11,7 +11,6 @@ This example is running three containers that we have mentioned at the beginning
 Here is an overview of the whole `docker-compose.yml` file, but don't worry, we will be referring to each section separately.
 
 ```yml showLineNumbers
-version: "3.8"
 services:
   broadcast_channel:
     image: postgres:alpine

documentation/docs/getting-started/quickstart/opal-playground/updating-the-policy.mdx

@@ -35,7 +35,6 @@ opal_server:
 You can also simply change the tracked repo in the example `docker-compose.yml` file by editing these variables:
 
 ```yml {7,9,11} showLineNumbers
-version: "3.8"
 services:
   ...
   opal_server: