Add docker build automation with push/PR triggers and Dependabot

[Copilot]

• Create .github/workflows/docker-build.yml with monthly schedule, push, pull_request, and manual triggers
• Workflow only builds the Docker image, no push
• Explicit permissions: contents: read to restrict GITHUB_TOKEN
• Docker build uses a tag for easier identification
• Add .github/dependabot.yml to keep GitHub Actions dependencies up to date (monthly schedule)

[donatj]

@copilot make this also run on push/pr and add a Dependabot config to maintain the action

[Copilot]

@copilot make this also run on push/pr and add a Dependabot config to maintain the action

Done in the latest commit. Added push and pull_request triggers to the workflow, and created .github/dependabot.yml with a monthly schedule to keep actions/checkout (and any future actions) up to date.

[Copilot]

Pull request overview

Adds GitHub automation for building the repo’s Docker image on common CI triggers, and configures Dependabot to keep GitHub Actions dependencies updated over time.

Changes:

• Introduces a GitHub Actions workflow to build the Docker image on push, pull_request, schedule, and manual dispatch.
• Restricts workflow token permissions to read-only contents.
• Adds Dependabot configuration for monthly GitHub Actions update PRs.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
.github/workflows/docker-build.yml	Adds CI workflow to checkout and run docker build on multiple triggers with restricted token permissions.
.github/dependabot.yml	Enables monthly Dependabot updates for GitHub Actions.

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[donatj]

It's not getting pushed anywhere. The tag is meaningless ya dingus