Move prometheus from synapse to here

.gitignore

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+.env
+data/
+misc/

docker-compose.yml

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+version: '3'
+services:
+  postgres:
+    image: postgres:latest
+    environment:
+      - POSTGRES_USER=grafana
+      - POSTGRES_PASSWORD
+      - POSTGRES_DB=grafanadb
+    volumes:
+      - ./data/postgres:/var/lib/postgresql/data/
+    restart: always
+    healthcheck:
+      test: pg_isready -U grafana -d grafanadb
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  redis:
+    image: redis:latest
+    restart: always
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 3s
+      retries: 3
+
+  grafana:
+    image: grafana/grafana:latest
+    user: "1000"
+    volumes:
+      - ./data/grafana:/var/lib/grafana
+      - ./data/grafana-config:/etc/grafana
+    ports:
+      - 127.0.0.1:84:3000
+    restart: always
+
+  prometheus:
+    image: prom/prometheus:latest
+    restart: always
+    command:
+      - --config.file=/etc/prometheus/prometheus.yml
+    volumes:
+      - ./data/prometheus.yml:/etc/prometheus/prometheus.yml
+      - ./data/prometheus:/prometheus
+    extra_hosts:
+      - "host.docker.internal:host-gateway"