Most Dockerfiles start from a parent image. Application baseimage is a special Docker image that is configured for correct use within Docker containers and aware about your application requirements, expectations + set of additional tools.
Most Dockerfiles start from a parent image. Application baseimage is a special Docker image that is configured for correct use within Docker containers and aware about your application requirements, expectations + set of additional tools.
Containers continue to be a buzz word this year too. A lot of teams try to implement microservices, dividing application into individual units: mini- website contains only presentation layer, REST API (sometimes several REST APIs) handling all business logic. Databases are hosted externally, in some situations running in containers too. Database — sometimes one, sometimes many (depending on business task)
Even today, approach to creating and managing containers is both manual and, in many ways, antiquated. Even for startups that use automation for their build processes, implementing containers often means maintaining complicated shell scripts to build the containers themselves. At the same moment, in classic server provisioning there are bunch of tools like Ansible, Chef, Puppet, Salt that efficiently take care on box provisioning. At the same moment, trying to apply those tools inside containers usually lead to size problem, as well as eliminating garbage upon use. That’s why for now still, if you want minimal image, you manage Dockerfile on your own.
This article, based on my experience, demonstrates approach of organizing documentation in your project aiming following:
“Don’t Check Passwords into Source Control or Hard-Code Them in Your Application Operations staff will remove your eyes with a spoon if they catch you doing this. Don’t give them the pleasure.
As a software developer, I constantly work with a bunch of virtual environments used for testing.