Update for Compatibility with Docker Compose v2

[taketo1113]

This Pull Request has been created because I found some errors installing TRAM container images with Docker Compose v2.

(1) docker-compose: No such file or directory

This error occurs when starting TRAM container images from the start-container task in Makefile.

For the error details, see the following:

$ make start-container
docker-compose -f docker/docker-compose.yml up -d
make: docker-compose: No such file or directory
make: *** [start-container] Error 1

It uses Docker Compose version v2.29.7 which is installed by Docker Desktop on Mac.
The recommended command-line syntax for Docker Compose v2 is docker compose.
https://docs.docker.com/compose/releases/migrate/#what-are-the-differences-between-compose-v1-and-compose-v2

This Pull Request changes the compose command to replace docker-compose with docker compose.

Additional information

The following Wiki page will also need similar changes.
(If this PR is merged, please update the Wiki accordingly.)
https://github.com/center-for-threat-informed-defense/tram/wiki/Installation

(2) Compose file: Version top-level element (obsolete)

This warning occurs when starting TRAM container images using docker/docker-compose.yml.

The warning details following:

$ docker compose up
WARN[0000] /Users/username/tram-docker/docker-compose.yml: the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion 

The cause is that the version attribute has been obsoleted.
https://docs.docker.com/reference/compose-file/version-and-name/#version-top-level-element-obsolete

This Pull Request changes to remove the obsolete attribute of version.

[mehaase]

Looks good. Thank you for submitting this patch.

[taketo1113]

@mehaase Thank you for merging.

I think it would be good to apply the replacement to the docker compose command on the Installation page of Wiki as well.
Since I don't have edit permissions for Wiki pages, I am attaching a patch file with the changes as a reference.
https://github.com/center-for-threat-informed-defense/tram/wiki/Installation

diff.patch

diff --git a/Installation.md b/Installation.md
index e496e5c..8cdbb61 100644
--- a/Installation.md
+++ b/Installation.md
@@ -19,7 +19,7 @@
     * Run this command from the same directory where you downloaded
       `docker-compose.yml`:
         ```shell
-        $ docker-compose up
+        $ docker compose up
         ```
     * The first time you run this command, it will download about 1GB of Docker
       images. This requires a connection to the internet. If your environment
@@ -36,7 +36,7 @@
    the password that you specified in `docker-compose.yml`.
    ![Screenshot 2023-08-27 at 7 26 18 PM](https://github.com/center-for-threat-informed-defense/tram/assets/320904/1da07cce-7d7b-4deb-8e0c-0b87ce1b9e9c)
 
-6. To shut down TRAM, type <kbd>Ctrl+C</kbd> in the shell where `docker-compose
+6. To shut down TRAM, type <kbd>Ctrl+C</kbd> in the shell where `docker compose
    up` is running.
 
 # Environment Variables