Add GitHub Actions workflow for building and pushing Docker container

.gitea/workflows/build.yaml

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+name: Build and Push container
+run-name: Build and Push container
+
+on:
+  push:
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+'
+
+env:
+  IMAGE: git.kvant.cloud/phoenix/metricbeat-hpc
+  VERSION: ${{ github.ref_name }}
+
+jobs:
+  build_besu:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to gitea registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.kvant.cloud
+          username: ${{ vars.PHOENIX_PACKAGE_WRITER_USERNAME }}
+          password: ${{ secrets.PHOENIX_PACKAGE_WRITER_TOKEN }}
+
+      - name: Update Dockerfile FROM version
+        run: sed -i "s|^FROM .\+|FROM docker.elastic.co/beats/metricbeat-oss:${{ env.VERSION }}|" Dockerfile
+
+      - name: Build and push to gitea registry
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/s390x
+          push: true
+          context: .
+          build-args: |
+            VERSION=${{ env.VERSION }}
+          image: ${{ env.IMAGE }}
+          cache-from: |
+            type=registry,ref=${{ env.IMAGE }}:${{ env.VERSION }}
+            type=registry,ref=${{ env.IMAGE }}:latest            
+          cache-to: type=inline
+          tags: |
+            ${{ env.IMAGE }}:${{ env.VERSION }}
+            ${{ env.IMAGE }}:latest

Dockerfile

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+FROM docker.elastic.co/beats/metricbeat-oss:latest
+
+COPY metricbeat.yml /usr/share/metricbeat/metricbeat.yml

metricbeat.yml

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+metricbeat.autodiscover:
+  providers:
+    - type: docker
+      hints.enabled: true
+
+metricbeat.modules:
+- module: docker
+  metricsets:
+    - container
+    - cpu
+    - diskio
+    - healthcheck
+    - info
+    - image
+    - memory
+    - network
+  hosts: ["unix:///var/run/docker.sock"]
+  period: 30s
+  enabled: True
+- module: system
+  metricsets:
+    - cpu             # CPU usage
+    - load            # CPU load averages
+    - memory          # Memory usage
+    - network         # Network IO
+    - process         # Per process metrics
+    - process_summary # Process summary
+    - uptime          # System Uptime
+    - socket_summary  # Socket summary
+    - core           # Per CPU core usage
+    - diskio         # Disk IO
+    - filesystem     # File system usage for each mountpoint
+    - fsstat         # File system summary metrics
+  enabled: true
+  period: 30s
+  processes: ['.*']
+  cpu.metrics: ["percentages"]
+  core.metrics: ["percentages"]
+
+processors:
+  - add_cloud_metadata: ~
+  - add_docker_metadata: ~
+  - add_id: ~
+
+output.elasticsearch:
+  hosts: '${ES_HOSTS}'
+  username: '${ES_USERNAME}'
+  password: '${ES_PASSWORD}'
+  ssl.verification_mode: "none"
+  index: '${ES_INDEX}'
+
+setup.template.name: '${ES_TEMPLATE_NAME}'
+setup.template.pattern: '${ES_TEMPLATE_PATTERN}'
+setup.template.settings:
+  index.number_of_shards: 1
+  index.number_of_replicas: 1
+setup.template.overwrite: false
+
+setup.ilm.enabled: false
+setup.ilm.check_exists: false
+setup.dashboards.enabled: false