How to escape double and single quotes in YAML within the same string

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> starts a block scalar, in which you do not need to escape anything at all (and there are no escape sequences processed). So assuming you want single quotes around your JSON-like value, just do:

  - name: Set environment variable
    command: >
      export EXTRA_CONFIG='{"client": {"subscriptions": ["DIND-Worker"], "cluster": "internal"}}'

Edit: Also be aware that a folded scalar by default includes a trailing newline character. If you do not want to have this, just use >- instead of >.

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