chore: improve ci

.github/workflows/integration_test.yml

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+name: Integration test
+
+on:
+  workflow_call:
+
+jobs:
+  integration_test:
+    runs-on: ubuntu-latest
+    env:
+      TZ: Europe/Moscow
+      DB_USER: chatyx_user
+      DB_PASSWORD: chatyx_password
+      DB_NAME: chatyx_db_test
+
+    services:
+      postgres:
+        image: postgres:15.4
+        env:
+          POSTGRES_USER: ${{ env.DB_USER }}
+          POSTGRES_PASSWORD: ${{ env.DB_PASSWORD }}
+          POSTGRES_DB: ${{ env.DB_NAME }}
+        options: >-
+          --health-cmd "pg_isready"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 15432:5432
+
+      redis:
+        image: redis:7.2
+        options: >-
+          --health-cmd "redis-cli ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 16379:6379
+
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.21
+
+      - name: Run test
+        run: go test -v ./test/... -run TestAppTestSuite

.github/workflows/lint.yml

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+name: Lint
+
+on:
+  workflow_call:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Run golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.54.2

.github/workflows/publish.yml

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+name: Publish Docker image
+
+on:
+  workflow_call:
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: mortalis/chatyx-backend
+
+      - name: Build docker image and push into registry
+        uses: docker/build-push-action@v5
+        with:
+          push: true
+          context: .
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/pull_request.yml

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+name: Pull request
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  lint:
+    uses: ./.github/workflows/lint.yml
+  unit_test:
+    needs: lint
+    uses: ./.github/workflows/unit_test.yml
+  integration_test:
+    needs: unit_test
+    uses: ./.github/workflows/integration_test.yml

.github/workflows/release.yml

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+name: Release
+
+on:
+  release:
+    types: [ published ]
+
+jobs:
+  publish:
+    uses: ./.github/workflows/publish.yml

.github/workflows/unit_test.yml

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+name: Unit test
+
+on:
+  workflow_call:
+
+jobs:
+  unit_test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          fetch-depth: 0
+
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.21
+
+      - name: Run test
+        run: |
+          go test -v ./internal/... ./pkg/... -covermode=count -coverprofile=coverage.out
+          go tool cover -func=coverage.out -o=coverage.out
+
+      - name: Go coverage badge
+        uses: tj-actions/coverage-badge-go@v2
+        with:
+          filename: coverage.out
+
+      - name: Verify changed files
+        uses: tj-actions/verify-changed-files@v16
+        id: verify-changed-files
+        with:
+          files: README.md
+
+      - name: Commit changes
+        if: steps.verify-changed-files.outputs.files_changed == 'true'
+        run: |
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git add README.md
+          git commit -m "chore: update coverage badge"
+
+      - name: Push changes
+        if: steps.verify-changed-files.outputs.files_changed == 'true'
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ github.token }}
+          branch: ${{ github.head_ref }}