diff --git a/.github/mergeable.yml b/.github/mergeable.yml
new file mode 100644
index 0000000..dfce04d
--- /dev/null
+++ b/.github/mergeable.yml
@@ -0,0 +1,10 @@
+version: 2
+mergeable:
+  - when: pull_request.*
+    name: 'Check PR description'
+    validate:
+      - do: description
+        no_empty:
+          enabled: true
+          message: Description matter and should not be empty. Provide detail with **what** was changed, **why** it was changed, and **how** it was changed.
+
diff --git a/.github/workflows/codacy.yml b/.github/workflows/codacy.yml
new file mode 100644
index 0000000..96ace09
--- /dev/null
+++ b/.github/workflows/codacy.yml
@@ -0,0 +1,62 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# This workflow checks out code, performs a Codacy security scan
+# and integrates the results with the
+# GitHub Advanced Security code scanning feature.  For more information on
+# the Codacy security scan action usage and parameters, see
+# https://github.com/codacy/codacy-analysis-cli-action.
+# For more information on Codacy Analysis CLI in general, see
+# https://github.com/codacy/codacy-analysis-cli.
+
+name: Codacy Security Scan
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main" ]
+  schedule:
+    - cron: '30 0 * * 3'
+
+permissions:
+  contents: read
+
+jobs:
+  codacy-security-scan:
+    permissions:
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
+      actions: read # only required for a private repository by github/codeql-action/upload-sarif to get the Action run status
+    name: Codacy Security Scan
+    runs-on: ubuntu-latest
+    steps:
+      # Checkout the repository to the GitHub Actions runner
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      # Execute Codacy Analysis CLI and generate a SARIF output with the security issues identified during the analysis
+      - name: Run Codacy Analysis CLI
+        uses: codacy/codacy-analysis-cli-action@d840f886c4bd4edc059706d09c6a1586111c540b
+        with:
+          # Check https://github.com/codacy/codacy-analysis-cli#project-token to get your project token from your Codacy repository
+          # You can also omit the token and run the tools that support default configurations
+          project-token: ${{ secrets.CODACY_PROJECT_TOKEN }}
+          verbose: true
+          output: results.sarif
+          format: sarif
+          # Adjust severity of non-security issues
+          gh-code-scanning-compat: true
+          # Force 0 exit code to allow SARIF file generation
+          # This will handover control about PR rejection to the GitHub side
+          max-allowed-issues: 2147483647
+
+      # Upload the SARIF file generated in the previous step
+      - name: Upload SARIF results file
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: results.sarif
+
diff --git a/.github/workflows/makefile.yml b/.github/workflows/makefile.yml
new file mode 100644
index 0000000..b4ce1fd
--- /dev/null
+++ b/.github/workflows/makefile.yml
@@ -0,0 +1,22 @@
+name: Makefile CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Build
+      run: make
+
+    - name: Clean
+      run: make clean
+
diff --git a/.gitignore b/.gitignore
index 702d7b5..f953e65 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,4 +52,5 @@ Mkfile.old
 dkms.conf
 
 .vscode
+.clang-format
 
diff --git a/src/calculator.c b/src/calculator.c
index 232f5e9..7791fbb 100644
--- a/src/calculator.c
+++ b/src/calculator.c
@@ -1,7 +1,6 @@
 #include <stdio.h>
 
 int main() {
-	printf("Hello world!\n");
-	return 0;
+  printf("Hello world!\n");
+  return 0;
 }
-