ci: refactor to use reusable workflows

Author: vojtechmares

.github/workflows/ci.yml

@@ -0,0 +1,18 @@
+name: dotnet-demo-api CI
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  test:
+    uses: vojtechmares/dotnet-demo-api/.github/workflows/reusable-test.yml@main
+
+  docker-build:
+    needs: [test]
+    uses: vojtechmares/dotnet-demo-api/.github/workflows/reusable-docker-build.yml@main
+
+  deploy:
+    needs: [docker-build]
+    if: ${{ contains(github.ref, 'release') }}
+    uses: vojtechmares/dotnet-demo-api/.github/workflows/reusable-deploy.yml@main

.github/workflows/deploy.yml

@@ -0,0 +1,20 @@
+name: Reusable deploy
+
+on:
+  workflow_call:
+    inputs:
+      environment:
+        required: true
+        type: string
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment: ${{ inputs.environment }}
+
+    steps:
+      - name: Deploy
+        run: |
+          echo "Deploying to ${{ inputs.environment }}..."
+          sleep 30
+          echo "Deploy to ${{ inputs.environment }} complete."

.github/workflows/reusable-deploy.yml

@@ -1,16 +1,11 @@
-name: Docker build
+name: Reusable Docker build
 
 on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
+  workflow_call:
 
 jobs:
   build:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
 
     permissions:
       contents: read
@@ -51,4 +46,4 @@ jobs:
         platforms: linux/amd64
         push: true
         tags: ${{ steps.meta.outputs.tags }}
-        labels: ${{ steps.meta.outputs.labels }}
+        labels: ${{ steps.meta.outputs.labels }}

.github/workflows/build.yml renamed to .github/workflows/reusable-docker-build.yml

@@ -1,16 +1,15 @@
-name: .NET Test
+name: Reusable .NET tests
 
 on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
+  workflow_call:
+    inputs:
+      dotnet-version:
+        required: true
+        type: string
 
 jobs:
   test:
-    runs-on: ubuntu-24.04 # or ubuntu-latest
+    runs-on: ubuntu-latest
 
     steps:
     - name: Checkout code
@@ -19,7 +18,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '9.0.x'
+        dotnet-version: ${{ inputs.dotnet-version }}
 
     - name: Cache NuGet packages
       uses: actions/cache@v4