anchor.diff:  $ gpg: assuming signed data in 'operator-sdk-${RELEASE_VERSION}-x86_64-apple-darwin'
   $ gpg: Signature made Fri Apr  5 20:03:22 2019 CEST
   $ gpg:                using RSA key <key_id> <1>
  -$gpg: Can't check signature: No public key
  +$ gpg: Can't check signature: No public key
   ----
   <1> RSA key string.
   +
  
positive.code: +
  ----
  $ brew install operator-sdk
  ----
  
  [id="osdk-installing-cli-source_{context}"]
  
negative.code: * For Linux:
  +
  ----
  $ curl -OJL https://github.com/operator-framework/operator-sdk/releases/download/${RELEASE_VERSION}/operator-sdk-${RELEASE_VERSION}-x86_64-linux-gnu
  ----
  
  * For macOS:
  +
  ----
  $ curl -OJL https://github.com/operator-framework/operator-sdk/releases/download/${RELEASE_VERSION}/operator-sdk-${RELEASE_VERSION}-x86_64-apple-darwin
  ----
  --
  
  