Remove Obsolete docker compose file version (#614)

modified:   configuration/docker-compose.yml

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# PR Details
## Description

Removed the "version:" tag a the top of the docker-compose files. These
are no longer needed and are obsolete in current and future versions of
Docker.

## Related Issue
[VH-1312](https://usdot-carma.atlassian.net/browse/VH-1312)
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## Motivation and Context

Because the version tag is obsolete, a warning note is published every
time a user uses the docker-compose files to start the V2X Hub
containers. Removing this tag will cause no changes in functionality and
will remove the warning.

## How Has This Been Tested?

Tags removed and tested locally. Everything worked as intended and
warning message was no longer shown.

## Types of changes

<!--- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->

- [X] Defect fix (non-breaking change that fixes an issue)
- [ ] New feature (non-breaking change that adds functionality)
- [ ] Breaking change (fix or feature that cause existing functionality
to change)

## Checklist:

<!--- Go over all the following points, and put an `x` in all the boxes
that apply. -->
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here to help! -->

- [ ] I have added any new packages to the sonar-scanner.properties file
- [ ] My change requires a change to the documentation.
- [ ] I have updated the documentation accordingly.
- [X] I have read the **CONTRIBUTING** document.
[V2XHUB Contributing
Guide](https://github.com/usdot-fhwa-OPS/V2X-Hub/blob/develop/Contributing.md)
- [ ] I have added tests to cover my changes.
- [ ] All new and existing tests passed.

.devcontainer/devcontainer.json

@@ -3,7 +3,7 @@
 {
 	// Docker Compose syntax from https://github.com/devcontainers/templates/blob/main/src/docker-existing-docker-compose/.devcontainer/devcontainer.json
 	// and https://github.com/microsoft/vscode-dev-containers/blob/main/container-templates/docker-compose/.devcontainer/devcontainer.json
-	"name": "V2XHUB Docker Compose Dev",
+	"name": "V2X Hub Docker Compose Dev",
 
 	// Update the 'dockerComposeFile' list if you have more compose files or use different names.
 	"dockerComposeFile": "docker-compose-vscode.yml",

.devcontainer/docker-compose-vscode.yml

@@ -1,5 +1,3 @@
-version: '3.3'
-
 services:
   v2xhub:
     build: 
@@ -31,7 +29,7 @@ services:
       - mysql_password
 
   db:
-    image: mysql:5.7
+    image: mysql:8.0
     container_name: mysql
     restart: always
     environment:
@@ -44,7 +42,7 @@ services:
       - mysql_password
       - mysql_root_password
     volumes:
-      - ../configuration/amd64/mysql/localhost.sql:/docker-entrypoint-initdb.d/localhost.sql
+      - ../configuration/mysql/localhost.sql:/docker-entrypoint-initdb.d/localhost.sql
       # include creation of a user (user/user) to be able to log in
       - ./mysql_add_dev_user.sql:/docker-entrypoint-initdb.d/mysql_add_dev_user.sql
       - mysql-datavolume:/var/lib/mysql

configuration/docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.7'
-
 services:
   db:
     image: mysql:8.0