Karzilla, Destroyer of Bugs

I've been meaning to teach myself about Docker since at least June of 2020, the last time I attended a technical conference (albeit online) and noticed that it was a common point of reference. Also, Dreamwidth has been using Docker in production since around that time. But I didn't manage to clear up the mental bandwidth to study it until this past week. I'm going to share my notes here, since I think it's a helpful thing to know about.

What is Docker? It's a software package that provides an isolated system environment for running applications. In practice, a Docker instance is not unlike a virtual machine, but with one key difference: you don't have to install and maintain a separate operating system. A Docker image is relatively lightweight and completely portable across different systems. Bonus: it doesn't cost anything to use unless you're a large company.

I found these resources particularly helpful:

1. Video: Learn Docker in 12 Minutes and its sequel, Docker Compose in 12 Minutes. I found these two to be the most accurate and accessible of the ones I viewed. There are many other similar videos online if you find those to be a bit too fast-paced, but the presentation quality varies widely.

2. Reading: The Docker Handbook is a free online book, presented as a single really long web page, that does an excellent job of describing how to use Docker.

3. Tutorial: Upon installing Docker, the software will instruct you to run its "getting-started" image, which contains some basic lessons and exercises. You can also view the same material on the Docker website.

All three of those explain how to get Docker on your machine, so I won't go into that here. Instead, here's a data dump from the notes I took when I was clarifying the basic concepts in my head.

( Read more... )

I've only done the tutorial so far; my next goal, obviously, is to figure out how to use Docker to run a local DW development environment. The files in https://github.com/dreamwidth/dw-free/tree/master/etc/docker should provide a good starting point.

These will be the last office hours offered for the month of May. I'm going on vacation at the end of the month and will be back in early June.

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting May 19:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office27

I may be active on IRC at other times this coming week, but these are the dates and times I'm fairly sure I can commit to being open to conversation.

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting March 3:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office25

These will be my last office hours before the next scheduled code push. If you want to discuss any projects with me before the code push, please sign up, or request an alternate time if none of these are suitable.

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting February 3:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office23

I may be active on IRC at other times this coming week, but these are the dates and times I'm fairly sure I can commit to being open to conversation.

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting January 20:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office21

Still haven't gotten any recent takers on these (although that's partially my fault for not having done any code review recently). These will probably be the last posted office hours for 2016, although you're always welcome to contact me any time you have any concerns or questions.

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting December 16:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office19

Let's try this again now that the baseball playoffs are over...

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting November 4:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office17

I may be active on IRC at other times this coming week, but these are the dates and times I'm fairly sure I can commit to being open to conversation.

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting October 14:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office15

I've reduced the number of available slots this week because I'm aiming to get a code push lined up for Saturday Oct 1, so I'm trying to keep my schedule around that clear for code review and incident triage. But feel free to let me know if you have something that needs feedback before then!

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting September 30:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office13

I may be active on IRC at other times this coming week, but these are the dates and times I'm fairly sure I can commit to being open to conversation.

The medium that I've chosen for scheduling office hours is a site called Sign Up Genius. It is pretty easy to use in my experience, and all of my kids' teachers use it for conferences, parties and such. You don't have to have an account on the site to sign up for time slots, which is pretty great - just give them your email address. They will send you a confirmation and a reminder, and nothing else. But if for whatever reason you have trouble claiming a time slot using that site, you can also comment here and I can take care of it for you.

I am only doing signups for a week at a time, because that's about how far in advance I can be fairly confident of my availability. Each week will start on Friday, and I'll post the signups for the following week on Tuesday or Wednesday.

Each signup slot is scheduled to run 90 minutes, but since they're non-adjacent, it's OK if we need to go longer. Anything Dreamwidth-related is fair game: we can talk about code you're writing, code you want to write but don't know how to proceed, code someone else wrote, or things that don't involve code at all (I hear such things exist). My only request is that you don't take more than two slots in a single week, to make sure there is enough of my time to go around. Of course, you're still welcome to catch me on IRC at other times if I seem to be around, and PMs are open 24/7. :)

Here's the link for my available meeting times for the seven-day period starting September 16:

http://www.signupgenius.com/go/4090D45AEAD2DAAF94-office11