Use the --secret flag from BuildKit to pass-on build secrets as stored in the dummy-secrets.json file:

docker build --no-cache -t myimage \
  --secret id=secretsfile,src=./dummy-secrets.json\
  --progress=plain .

References:

• Build secrets in Docker and Compose, the secure way
• Docker build secrets: the easy way, the wrong way, the sneaky way
• Build images with BuildKit