[Issue #11] Monitoring: Prometheus + Grafana + Loki on Doodle project

.github/workflows/ci.yml

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+name: CI Pipeline - Doodle Quarkus
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Java 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Build with Maven
+        run: ./mvnw clean package -DskipTests
+        working-directory: ./api
+
+      - name: Build Docker Compose
+        run: docker compose -f api/docker-compose.yaml up -d --build
+
+      - name: Check services
+        run: docker compose -f api/docker-compose.yaml ps
+
+      - name: Teardown
+        run: docker compose -f api/docker-compose.yaml down

api/README.md

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+# code-with-quarkus project
+
+This project uses Quarkus, the Supersonic Subatomic Java Framework.
+
+If you want to learn more about Quarkus, please visit its website: https://quarkus.io/ .
+
+## Running the application in dev mode
+
+You can run your application in dev mode that enables live coding using:
+```shell script
+docker-compose up --detach 
+# Wait the correct start of the docker services and then
+./mvnw compile quarkus:dev
+```
+
+To stop the application and its dependencies, type `ctrl+c` in the bash session and run `docker-compose down`.
+
+## Packaging and running the application
+
+The application can be packaged using:
+```shell script
+./mvnw package
+```
+It produces the `code-with-quarkus-1.0.0-SNAPSHOT-runner.jar` file in the `/target` directory.
+Be aware that it’s not an _über-jar_ as the dependencies are copied into the `target/lib` directory.
+If you want to build an _über-jar_, execute the following command:
+```shell script
+./mvnw clean package -Dquarkus.package.type=uber-jar
+```
+
+The application is now runnable using `java -jar target/code-with-quarkus-1.0.0-SNAPSHOT-runner.jar`.
+
+## Creating a native executable
+
+You can create a native executable using: 
+```shell script
+./mvnw package -Pnative
+```
+
+Or, if you don't have GraalVM installed, you can run the native executable build in a container using: 
+```shell script
+./mvnw package -Pnative -Dquarkus.native.container-build=true
+```
+
+You can then execute your native executable with: `./target/code-with-quarkus-1.0.0-SNAPSHOT-runner`
+
+If you want to learn more about building native executables, please consult https://quarkus.io/guides/maven-tooling.html.
+
+# RESTEasy JAX-RS
+
+Guide: https://quarkus.io/guides/rest-json
+
+

api/docker-compose.yaml

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+version: "3.8"
+services:
+  db:
+    image: mysql
+    ports:
+      - "3307:3306"
+    environment:
+      - MYSQL_ROOT_PASSWORD=root
+      - MYSQL_DATABASE=tlc
+      - MYSQL_USER=tlc
+      - MYSQL_PASSWORD=tlc
+  etherpad:
+    image: etherpad/etherpad
+    ports:
+      - "9001:9001"
+    environment:
+      AUTHENTICATION_METHOD: "apikey"
+    volumes:
+      - ./APIKEY.txt:/opt/etherpad-lite/APIKEY.txt:ro
+  mail:
+    image: bytemark/smtp
+    restart: always
+    ports:
+      - "2525:25"
+  frontend:
+      image: node:18-alpine
+      working_dir: /app
+      volumes:
+        - ../front:/app  
+      ports:
+        - "4200:4200"
+      command: sh -c "npm install && npx ng serve --host 0.0.0.0 --port 4200 --proxy-config proxy.conf.json"
+      depends_on:
+        - db
+
+  prometheus:
+    image: prom/prometheus:latest
+    ports:
+      - "9090:9090"
+    volumes:
+      - ./prometheus.yml:/etc/prometheus/prometheus.yml
+    extra_hosts:
+      - "host.docker.internal:host-gateway"   
+    depends_on:
+      - db
+
+  grafana:
+    image: grafana/grafana:latest
+    ports:
+      - "3000:3000"
+    environment:
+      - GF_SECURITY_ADMIN_PASSWORD=admin
+      - GF_PATHS_PROVISIONING=/etc/grafana/provisioning  
+    volumes:
+      - grafana_data:/var/lib/grafana
+      - ./grafana/provisioning:/etc/grafana/provisioning:ro
+    depends_on:
+      - prometheus
+      - loki  
+
+  loki:
+    image: grafana/loki:2.9.0
+    ports:
+      - "3100:3100"
+    volumes:
+      - ./loki-config.yaml:/etc/loki/local-config.yaml:ro
+      - loki_data:/loki
+    command: -config.file=/etc/loki/local-config.yaml
+    restart: unless-stopped
+
+  promtail:
+    image: grafana/promtail:2.9.0
+    volumes:
+      - /var/log:/var/log:ro
+      - /var/lib/docker/containers:/var/lib/docker/containers:ro
+      - ./promtail-config.yaml:/etc/promtail/config.yaml:ro
+    command: -config.file=/etc/promtail/config.yaml
+    restart: unless-stopped
+    depends_on:
+      - loki
+
+volumes:
+  grafana_data:
+  loki_data: