Elastic + APM Not Found (":[{\"type\":\"resource_not_found_exception\",\"reason\":\"index template matching [logs-apm.error] not found\"}] - elasticsearch

Question

Small question regarding Elastic + APM server please.
For testing purpose only, I would like to spin up an Elastic instance + APM server, and visualize traces in Kibana.
Therefore, I started this docker compose file, this is what I tried:
version: "3.9"
services:
elasticsearch:
networks: ["mynetwork"]
container_name: elasticsearch.mynetwork
hostname: elasticsearch.mynetwork
image: elasticsearch:8.6.0
ports:
- 9200:9200
environment:
- discovery.type=single-node
- xpack.security.enabled=false
ulimits:
memlock:
soft: -1
hard: -1
apm-server:
networks: [ "mynetwork" ]
container_name: apm-server.mynetwork
hostname: apm-server.mynetwork
image: elastic/apm-server:8.6.0
ports:
- 8200:8200
command: >
apm-server -e
-E apm-server.rum.enabled=true
-E setup.kibana.host=kibana.mynetwork:5601
-E setup.template.settings.index.number_of_replicas=0
-E apm-server.kibana.enabled=true
-E apm-server.kibana.host=kibana.mynetwork:5601
-E output.elasticsearch.hosts=["elasticsearch.mynetwork:9200"]
cap_add: [ "CHOWN", "DAC_OVERRIDE", "SETGID", "SETUID" ]
cap_drop: [ "ALL" ]
healthcheck:
interval: 10s
retries: 12
test: curl --write-out 'HTTP %{http_code}' --fail --silent --output /dev/null http://localhost:8200/
Upon container start, the APM server is printing this error in a looping manner.
{"log.level":"error","#timestamp":"2023-01-31T22:30:31.944Z","log.logger":"beater","log.origin":{"file.name":"beater/waitready.go","file.line":62},"message":"precondition 'apm integration installed' failed: error querying Elasticsearch for integration index templates: unexpected HTTP status: 404 Not Found ({\"error\":{\"root_cause\":[{\"type\":\"resource_not_found_exception\",\"reason\":\"index template matching [traces-apm.sampled] not found\"}],\"type\":\"resource_not_found_exception\",\"reason\":\"index template matching [traces-apm.sampled] not found\"},\"status\":404}): to remediate, please install the apm integration: https://ela.st/apm-integration-quickstart","service.name":"apm-server","ecs.version":"1.6.0"}
Even after looking at the official website, I am having trouble understanding what is missing.
May I ask what should I edit in order to have Elastic and APM server running please?
Thank you