Building Microservices with Go

Docker build context

When we run our Docker build command, we set the context path as the final argument. What actually happens when the command executes is that the context is transferred to the server. This can cause problems if you have a large source folder, so it is good practice to only send the files you need to be packaged inside the container or the files you need when building the container. There are two ways we can mitigate this problem. The first is to ensure that our context only has the files on it we require. Since this is not always possible we have a secondary option of using a .dockerignore file.