I am writing an article. The main heading of it is this "Create a demo file on deployer host via GitLab CI"
The problem is that I am not sure which article should I use before the "demo file": "a" demo file or "the" demo file?
The demo file could be any text file. It doesn't matter which name and which content. It is only to confirm that the change in its content has changed or not. So it is not specific. So the 'a' article should be used. But on the other hand, the demo file must be on the certain host in the certain folder so it is being specific somehow so the article should be "the".
I explain used words that are connected to the server and network domain:
Gitlab CI - web service
deployer - a name of the host
host - server from the network point of view
The second question: "Do it by ssh-agent". Ssh-agent is known way of transmitting the encrypting key. I am using it the first time in the article. So ssh-agent or the ssh-agent or an ssh-agent?