Tess's blog

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Weekend Observations

This weekend seemed to be oddly one of the better weekends I've had in quite some time. I feel that certain things were accomplished, while not feeling "I didn't have a weekend". What was different this time than all those other weekends as of late?

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Docker from Scratch, Part 4: Compose and Volumes

In the last post, we’ve created a repeatable web server container using a single file, the Dockerfile. While this is great, there’s one big limitation to a Dockerfile: It can only create one container. Docker containers are also only intended to run one process. What do we do if we want to run a web server, and a database, and a Solr instance, and a…

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Docker from Scratch, Part 3: Entrypoints and Ports

In the last post we used the RUN statement in our Dockerfile to setup and install software in our container. This saves us the trouble of creating build scripts that we need to run each time we start the container. We still have to specify the command to run when we start the container. What we want to do is eliminate that so we have less to remember each time we use the container.

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Docker from Scratch, Part 1: Installing and your First Container

The last few months I’ve been engaged in a quest to understand something new to me. Since the mid-2000s, I’ve been using virtualization technologies to run classroom environments, test software, and run local web servers for development. First, it was using VMware Player, then Server, and today everything I virtualize runs on the open source Virtualbox. So when I heard about containerization, I was stunned.


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