Traefik docker config for tls options

Traefik Traefik v2 (latest)
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2

You'll have to set that in a dynamic file provider.
https://docs.traefik.io/https/tls/#tls-options

Here is an example setting the default TLS option and a TLS1.3 only option set that you can reference with the traefik.routers.foo.tls.options=modern-2020

tls:
  options:
    default:
      minVersion: VersionTLS12
      cipherSuites:
        - TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
        - TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
        - TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
        - TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
        - TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
        - TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
    modern-2020:
      minVersion: VersionTLS13
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