* Add instructions for cross-platform builds
* Clean up shields
* Clean up tables for each Docker configuration item
* Add section about supported tags

This should resolve the following error:

Error: Workflows triggered by Dependabot on the "push" event run with read-only
access. Uploading Code Scanning results requires write access. To use Code
Scanning with Dependabot, please ensure you are using the "pull_request" event
for this workflow and avoid triggering on the "push" event for Dependabot
branches. See
https://docs.github.com/en/code-security/secure-coding/configuring-code-scanning#scanning-on-push
for more information on how to configure these events.

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

Co-authored-by: Nick M. <50747025+mcdonnnj@users.noreply.github.com>

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

* Add a comment describing what the files does.
* Add sections to organize patterns.

Due to her departure this removes hillaryj from the default CODEOWNERS we use
in our projects.

The semver package is needed by the bump_version.sh script, but it is not
included in requirements-dev.txt.

The version attribute has been depricated and will be removed once our 
systems move to a more recent release.

Co-authored-by: Hillary <hillary.jeffrey@trio.dhs.gov>

Since the GitHub Actions configuration builds images on tag pushes, we should
use the standard tagging script we use for the same purpose in other
repositories. This will make it easier to tag, build, and push Docker images
of a specific version in a standardized manner.

Co-authored-by: Shane Frasier <jeremy.frasier@trio.dhs.gov>

Hooks updated with the `pre-commit autoupdate` command.

Note:
The `ansible-lint` hook is intentionally being held back on 4.3.7 because of
ongoing issues with the 5.x version and how we use Ansible (standalone Galaxy
roles).

With the release of pyenv v2.0.0 there is a breaking change around startup
logic that necessitates an update for our pyenv setup instructions. Also
add a statement about how to get configuration instructions from pyenv
itself.

Update pre-commit Hooks

…owners

Remove User from CODEOWNERS

…ctions

Update Instructions for Configuring pyenv

Improve gitignore file comments and organization.

Mirror changes in cisagov/skeleton-generic by adding a Docker section to the
gitignore file and moving appropriate entries to that section.

⚠️ CONFLICT! Lineage pull request for: skeleton

…dabot_branches

…or_dependabot_branches

Skip CodeQL Workflow for Dependabot Branches on push Events

Add semver to Development Requirements File

Add the tag.sh Script

Enable container publication to GitHub Container Registry.

…ions

Add better build instructions to the README.

…iner

This change was discussed among @cisagov/team-ois here:
cisagov/gatherer#60 (review)

Also correct git comments to use the imperative mood.

Co-authored-by: dav3r <david.redmin@trio.dhs.gov>

…mber-in-readme

Update the README to reference the latest version of the Docker container

Co-authored-by: Nick M <50747025+mcdonnnj@users.noreply.github.com>

Add a section to the README for ports

Add rules to enforce ATX-closed headers, dashes for unordered list elements,
and `1.` for ordered list elements.

Add <h1> and <img> tags to the allowed list for MD033 (HTML elements) to
support using an image as the first thing in a markdown file (header image).

This converts the existing `.mdl_config.json` file to an equivalent
`.mdl_config.yaml` file. The reference in the markdownlint pre-commit hook
configuration is updated to match.

Co-authored-by: Shane Frasier <jeremy.frasier@trio.dhs.gov>

Now that this is a YAML file we can add comments explaining the rule
modifications we use. This will make it easier to edit or expand in the future.

This hook will validate any pre-commit hook manifest files in the repository.

We should be doing this because the Packer and Terraform pre-commit
hooks leverage the corresponding executables; therefore, it makes
sense to go ahead and install the particular versions of those
executables that we support.  Also add support for optionally
debugging via tmate.

See also cisagov/skeleton-generic#74.

Co-authored-by: Nick M. <50747025+mcdonnnj@users.noreply.github.com>

There is no reason to create /usr/bin/terraform.  This is a vestige of
an earlier age.

Co-authored-by: Nick M. <50747025+mcdonnnj@users.noreply.github.com>

The Terraform installation does not destroy the existing system
Terraform installation, and neither should the Packer installation.

Co-authored-by: Nick M. <50747025+mcdonnnj@users.noreply.github.com>

Note that this change is dependent on the merging of
cisagov/setup-env-github-action#31.

Co-authored-by: Nick M. <50747025+mcdonnnj@users.noreply.github.com>

Some variables defined in the go installation are used in the cache
task, so the go installation must happen first.

Co-authored-by: Nick M. <50747025+mcdonnnj@users.noreply.github.com>

Co-authored-by: Nick M. <50747025+mcdonnnj@users.noreply.github.com>

As of [Go 1.16](https://tip.golang.org/doc/go1.16#go-command) the `GO111MODULE` environment variable defaults to `on` and `go get` has been deprecated for module installation.

Co-authored-by: Nick M. <50747025+mcdonnnj@users.noreply.github.com>

The `shfmt` tool does not ship on the GitHub Actions runners so we must install
it manually.

We have had a difficult time with how beautysh parses some shellscripts. I went
in pursuit of an alternative and I believe shfmt to be a good alternative.

Co-authored-by: Shane Frasier <jeremy.frasier@trio.dhs.gov>

This is performed by running `pre-commit autoupdate`, but with the
`ansible-lint` hook held back manually.

Update pre-commit Hooks

Add the validate_manifest Hook to pre-commit Configuration

…ting

Update markdownlint Configuration

…ting

…-for-linting

Install terraform and packer for the linting job

…_shfmt

Replace beautysh hook with cisagov/pre-commit-shfmt

Update to reflect the new pre-commit configuration.

⚠️ CONFLICT! Lineage pull request for: skeleton

…tion

…onfiguration

Standardize the Layout of the Lineage Configuration File

Update the Pin for actions/github-script to v4

Use preferred capitalization for Docker and Docker Hub

The project does not rely on any underlying versioning to dictate the version
used in its image tags. The README is updated to reflect that state of affairs.