Add an entry-point script

- [Instructor] Let's get started … on the entrypoint script. … The first thing we need to do is make it executable. … This will allow the script to be run … when the container starts. … I'll do that with the chmod + x command. … Now let's take a look at the … ls of this directory. … In this output we could see that the … entrypoint script is now executable. … We can tell by the x entries … and the mode for the file. … Now let's take a look at the script. … At the top is the shebang line. … This tells the operating system … which interpreter to use to run the script. … In this case we're using bash. … I've also added the set - e directive. … So bash will exit the script immediately … if an error is encountered. … After that are some comments … outlining what our script does. … If we see the keyword "then do something" … if not "exit gracefully". … The $* is a variable that contains the … arguments that were passed to the script. … So for our "if" statement we're echoing … those arguments to grep command …