pre-commit from templates.

- Use common pre-commit snippet for Docker projects.
- Use GitLab CI template for pre-commit job.

.gitlab-ci.yml

 ---
+include:
+  - project: shore/ci-templates
+    file: templates/pre-commit.yml
+
 image: adarnimrod/ci-images:docker
 
 stages:
@@ -6,20 +10,6 @@ stages:
   - build
   - run
 
-pre-commit:
-  stage: test
-  image: adarnimrod/ci-images:pre-commit
-  variables:
-    XDG_CACHE_HOME: "$CI_PROJECT_DIR/.cache"
-    # Disabled until https://github.com/pre-commit/pre-commit/issues/1387 is
-    # resolved.
-    SKIP: "hadolint,docker-compose"
-  script:
-    - pre-commit run --all-files
-  cache:
-    paths:
-      - .cache/
-
 build:
   stage: build
   tags: ["host01.shore.co.il"]

.pre-commit-config.yaml

-# vim:ff=unix ts=2 sw=2 ai expandtab
 ---
 repos:
-  - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v2.3.0
+  - repo: https://github.com/pre-commit/pre-commit-hooks.git
+    rev: v3.4.0
     hooks:
       - id: check-added-large-files
+      - id: check-executables-have-shebangs
       - id: check-merge-conflict
-      - id: detect-private-key
+      - id: check-symlinks
       - id: trailing-whitespace
 
+  - repo: https://github.com/Yelp/detect-secrets
+    rev: v0.14.3
+    hooks:
+      - id: detect-secrets
+
   - repo: https://github.com/adrienverge/yamllint
-    rev: v1.17.0
+    rev: v1.25.0
     hooks:
       - id: yamllint
 
@@ -21,13 +26,23 @@ repos:
         types: [plain-text]
         exclude: LICENSE
 
-  - repo: https://github.com/Yelp/detect-secrets
-    rev: v0.13.0
+  - repo: https://github.com/executablebooks/mdformat.git
+    rev: 0.5.3
     hooks:
-      - id: detect-secrets
+      - id: mdformat
+
+  - repo: https://git.shore.co.il/nimrod/shell-pre-commit.git
+    rev: v0.6.0
+    hooks:
+      - id: shell-lint
+
+  - repo: https://github.com/shellcheck-py/shellcheck-py.git
+    rev: v0.7.1.1
+    hooks:
+      - id: shellcheck
 
   - repo: https://git.shore.co.il/nimrod/docker-pre-commit.git/
     rev: v0.3.0
     hooks:
-      - id: docker-compose
       - id: hadolint
+      - id: docker-compose