Add pre-commit hooks + CI

Signed-off-by: Chris Evich <cevich@redhat.com>

.gitignore

@@ -1 +0,0 @@
-/.pre-commit-config.yaml

.gitlab-ci.yml

@@ -1,11 +1,23 @@
 ---
 
 default:
-  image: quay.io/buildah/stable:v1.31.0
+  image: quay.io/buildah/stable:v1.32
   tags:
     - docker
     - linux
 
+workflow:
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS
+      when: never
+    - if: $CI_COMMIT_BRANCH
+
+include:
+  - component: gitlab.com/blue42u/ci.pre-commit/lite@0.2.0
+    inputs:
+      job_stage: test
+
 envars:
   stage: test
   script: |
@@ -14,6 +26,9 @@ envars:
 
 commit_check:
   stage: test
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - when: never
   variables:
     BADRX: '^(squash!)|(fixup!)'
   script: |

.pre-commit-config.yaml

@@ -0,0 +1,48 @@
+default_language_version:
+  python: python3
+default_install_hook_types: [pre-commit, commit-msg]
+default_stages: [pre-commit]
+
+repos:
+  - repo: https://github.com/executablebooks/mdformat
+    rev: '0.7.17'
+    hooks:
+    - id: mdformat
+      additional_dependencies:
+      - mdformat-footnote
+      - mdformat-tables
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: fix-byte-order-marker
+      - id: mixed-line-ending
+      - id: check-executables-have-shebangs
+      - id: check-symlinks
+      - id: destroyed-symlinks
+      - id: check-merge-conflict
+      - id: check-case-conflict
+      - id: no-commit-to-branch
+        args: [--branch, main]
+      - id: check-yaml
+
+  - repo: https://github.com/python-jsonschema/check-jsonschema
+    rev: '0.28.0'
+    hooks:
+      # Validate the GitLab CI scripts against the schema. Doesn't catch everything but helps.
+      - id: check-gitlab-ci
+        files: '.*\.gitlab-ci\.yml$'
+
+  - repo: https://github.com/jumanjihouse/pre-commit-hooks
+    rev: '3.0.0'
+    hooks:
+      - id: forbid-binary
+      - id: require-ascii
+
+  - repo: meta
+    hooks:
+      # Un-comment (maybe temporarily) to check which hooks don't apply.
+      # - id: check-hooks-apply
+      - id: check-useless-excludes

README.md

@@ -75,7 +75,7 @@ for `podman`. However, some container images you may want to use for jobs
 At the same time, most distributions also set `65536` as the default maximum
 number (including ID `0`) of IDs to allocate for user-namespaces (via
 `/etc/login.defs`). This creates a problem you won't realize until the runner
-actually picks up a job 😞 The main symptom of this issue will be messages in
+actually picks up a job. The main symptom of this issue will be messages in
 the pipglr containers log, similar to (abbreviated):
 
 ```text