CODE EXAMPLE FOR SHELL

Remplace Placeholder with shell command

$ cp state-machine.json test.json
$ sed -i "" 's/BUILD_ENV/dev/g' test.json && sed -i "" 's/AWS_ACCOUNT_ID/086302202120/g' test.json ## MAC OS
$ sed -i "s/BUILD_ENV/dev/g" test.json && sed -i "s/AWS_ACCOUNT_ID/086302202120/g" test.json