docker build . --build-arg NWRFC_ZIP=[NWRFC zip file] --build-arg SAPCAR_EXE=[SAPCAR executable] --build-arg CRYPTOLIB_SAR=[cryptolib archive] --secret id=key,src=[p12 file with private key] --secret id=pass,src=[path to file containing passphrase for p12 file] -t pyrfc:0.1