enhancement: add clamav docker compose example

deployments/examples/ocis_clamav/README.md

@@ -0,0 +1,6 @@
+---
+document this deployment example in: docs/ocis/deployment/ocis_clamav.md
+---
+
+Please refer to [our documentation](https://owncloud.dev/ocis/deployment/ocis_clamav/)
+for instructions on how to run this scenario.

deployments/examples/ocis_clamav/docker-compose.yml

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+---
+version: "3.7"
+
+services:
+  ocis:
+    image: owncloud/ocis:${OCIS_DOCKER_TAG:-latest}
+    networks:
+      ocis-net:
+    entrypoint:
+      - /bin/sh
+    # run ocis init to initialize a configuration file with random secrets
+    # it will fail on subsequent runs, because the config file already exists
+    # therefore we ignore the error and then start the ocis server
+    command: [ "-c", "ocis init || true; ocis server" ]
+    environment:
+      # setup is for demonstration purposes only;
+      OCIS_INSECURE: "${INSECURE:-false}"
+      OCIS_LOG_LEVEL: ${OCIS_LOG_LEVEL:-info}
+      # admin user password
+      IDM_ADMIN_PASSWORD: "${ADMIN_PASSWORD:-admin}" # this overrides the admin password from the configuration file
+      # demo users
+      IDM_CREATE_DEMO_USERS: "${DEMO_USERS:-true}"
+      # enable the antivirus service
+      OCIS_ADD_RUN_SERVICES: "antivirus"
+      # configure the antivirus service
+      POSTPROCESSING_STEPS: "virusscan"
+      ANTIVIRUS_SCANNER_TYPE: "clamav"
+      ANTIVIRUS_CLAMAV_SOCKET: "/var/run/clamav/clamd.sock"
+    volumes:
+      - "ocis-config:/etc/ocis"
+      - "ocis-data:/var/lib/ocis"
+      - "clamav-socket:/var/run/clamav"
+    ports:
+      - 9200:9200
+    logging:
+      driver: "local"
+    restart: always
+
+  clamav:
+    image: clamav/clamav:${CLAMAV_DOCKER_TAG:-latest}
+    networks:
+      ocis-net:
+    volumes:
+      - "clamav-socket:/tmp"
+      - "clamav-db:/var/lib/clamav"
+    logging:
+      driver: "local"
+    restart: always
+
+volumes:
+  clamav-socket:
+  clamav-db:
+  ocis-config:
+  ocis-data:
+
+networks:
+  ocis-net: