Add IPv6 config to docker-compose.yml

[stephanie0x00]

Changes

Adds IPv6 to the docker compose file to enable IPv6 scanning.

Note: this requires something like this in /etc/docker/daemon.json to enable IPv6 for docker itself.

{
	"experimental": true,
	"ip6tables": true
}

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Code Checklist

• All the commits in this PR are properly PGP-signed and verified;
• This PR only contains functionality relevant to the issue; tickets have been created for newly discovered issues.
• I have written unit tests for the changes or fixes I made.
• For any non-trivial functionality, I have added integration and/or end-to-end tests.
• I have performed a self-review of my code and refactored it to the best of my abilities.

Communication

• I have informed others of any required .env changes files if required and changed the .env-dist accordingly.
• I have made corresponding changes to the documentation, if necessary.

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Checklist for code reviewers:

Copy-paste the checklist from the docs/source/templates folder into your comment.

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Checklist for QA:

Copy-paste the checklist from the docs/source/templates folder into your comment.

[ammar92]

Checklist for QA:

• I have checked out this branch, and successfully ran a fresh make reset.
• I confirmed that there are no unintended functional regressions in this branch:
  • I have managed to pass the onboarding flow
  • Objects and Findings are created properly
  • Tasks are created and completed properly
• I confirmed that the PR's advertised feature or hotfix works as intended.

What works:

• Seems to work for me (doesn't break on a network without IPv6 capabilities)

[underdarknl]

This addition breaks rollout on services where ipv6 is not available. For example GitPod. Removing this makes the setup run again.

Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error running hook #0: error running hook: exit status 1, stdout: , stderr: failed to add interface veth012dbd4 to sandbox: error setting interface "veth012dbd4" IPv6 to fc42:ca7::2/64: failed to enable ipv6: failed to enable IPv6 forwarding for container's interface eth0: open /proc/sys/net/ipv6/conf/eth0/disable_ipv6: read-only file system: unknown