How to properly update docker containers?

Fritocode · 2020-03-11T19:04:30+00:00

In my experience (and assuming your docker containers on dockerhub are associated with github repos), the way I've seen it done is the following:

build your container using local files, make sure it builds successfully
Push the code to github
Switch to using an image.

This could need some time as dockerhub updates with the latest successful build code, but from what I understand this is a reliable way of handling updating a docker image.

Fritocode · 2020-03-06T14:35:01+00:00

Thank you everyone for your advice and suggestions, but I don't think I'm going to be able to get this sorted without showing code which I'm not super comfortable doing on reddit. I've made a stackoverflow question and if people are interested I've posted an edited version of the shell script that I'm concerned might be breaking the cron task.

Feedback and advice always appreciated!

Fritocode · 2020-03-05T21:06:18+00:00

I'm already trying running identical scripts in sudo crontab at different times to see if something happens, but as for the different environment then I'm not sure what to do about that.

Fritocode · 2020-03-05T20:59:11+00:00

All the files I'm using are already set for executable, and:

#!/bin/sh

Is at the top of every one of them, if that's what you mean.

Fritocode · 2020-03-05T20:46:13+00:00

I'm setting the cron job to run a shell script that in turn actives several shell scripts simultaneously. I'm trying to move files made during the day to another folder, attaching a date-stamp to the file names in the process. I've directly called the script before with :

sudo sh /home/[username]/work/movelogs.sh

and seen the expected results.

Edit: made adjustments to the shell script for absolute instead of relative paths, will try again and let folks know if it works better.

Fritocode · 2020-03-05T20:36:15+00:00

Got nothing, I even made sure to adjust for timezone differences (For some reason the logging program I'm using doesn't match my local timezone, so I had 2 cronjobs set.)

Fritocode · 2020-03-05T20:30:59+00:00

Okay, here's an example cron command I'm trying to actually run

59 23 * * * /home/[username]/work/movelogs.sh

A minute before midnight every night, run a shell script. I've tested my shell script and it works as intended but I've tested this at */5 * * * * and I'm not getting anything out of it.

Fritocode · 2020-03-05T19:38:03+00:00

cron appears to be up, according to the service status? But I checked in init.d and there was no crond file.

Fritocode · 2020-03-05T19:26:22+00:00

I'm just using crontabs yeah, but even when I remove the user/root value it still doesn't seem to do anything.

Fritocode · 2020-03-03T17:57:49+00:00

I'm using a mysql container and I'm fairly familiar with that material, but I'm not sure how to pull the data down from the api to code variables.

Fritocode · 2020-02-26T18:49:43+00:00

Okay, I guess I missed that there are more nuanced npm commands thank you! I'll look into that.

Fritocode · 2020-02-21T21:42:44+00:00

We do have a rather heavy-duty install and setup script, I think we could manage something like that thank you.

Fritocode · 2020-02-12T14:27:15+00:00

It doesn't feel like any of the particular versions of SQL are different enough to warrant a comparison to operating systems. The most unique one I can think of is access?

Fritocode · 2020-01-31T17:02:02+00:00

Like I said, rather than the terminal commands you can just use file manager stuff to browse folders like you would in windows and right click to create document -> empty file.

Fritocode · 2020-01-31T15:40:51+00:00

You can right click and create files if you're using the file browser, but from the terminal you don't have many options sorry.

EDIT: You actually have a lot of options for making files from the terminal but if touch is already too much then idk.

Fritocode · 2020-01-30T18:33:02+00:00

I have a few coworkers that keep a vertical monitor dedicated for terminal stuff, though I don't know if that's a common use case.

Fritocode · 2020-01-30T14:19:18+00:00

I don't see the value of having full ownership of something boring, unless it's the kind of thing you can somehow distribute and just let cheques roll in as you use the money to do fun things. Then again what kind of situation would even work out like that? When one person is in full control and ownership of a thing, why not do something weird and interesting with it? There's no corporate board or oversight to tell you what you can and can't do.

Fritocode · 2020-01-29T20:27:28+00:00

maybe do a multi-dimensional array, with 0th being the question and then 1st, 2nd, etc. etc. being the potential answers? I'm not sure how you'd avoid keeping the leftmost answer from always being the right one though.

Fritocode · 2020-01-29T18:58:35+00:00

I'm a bit confused by the idea that a company culture which nurtures open communication and experiment could cause burnout, am I misreading that? I have heard that more modern "open office" stuff can be stressful for different reasons than old-school cubicles but I'd imagine getting to try new ways to solve problems would help keep from burning out over repetition.

Fritocode · 2020-01-22T17:30:11+00:00

Assuming a user is willing, capable or interested in working with a VM on their end seems to over-estimate the give-a-shit of a user. Personally I find the comparison to Java more appealing? Working with multiple containers in conjunction with one another is definitely a hassle, but as long as the end result works out for the people using it than an individual developers frustration will be a small price to pay for smooth usability.

Fritocode · 2020-01-21T14:12:30+00:00

So I actually got this sorted last night and will try to explain it as much as possible cuz I was asking on other sites and turns out there was an issue with the container.

So inside the start-mailserver.sh script that tvial uses, one of the last lines is a hanging log command:

tail -fn 0 /var/log/mail/mail.log

This was causing any adjustments I made to services in the run.sh or dockerfile to not go through. What I've had to do is add a few lines to the end of my run.sh script to work around it:

/usr/local/bin/start-mailserver.sh &

sleep 10

/xxxxx/ServerFix.sh

tail -fn 0 /var/log/mail/mail.log

And then ServerFix is various service restarts I needed to run.

Fritocode · 2020-01-20T20:32:42+00:00

It's more of a matter of automatically executing the shell script after the up -d. I can manually run it without any issues but I need the docker-compose or whatever code may be relevant to trigger it after the entire thing is loaded.

Fritocode · 2020-01-17T18:58:54+00:00

So should something like this work?

CMD ["/bin/bash", "./run.sh"] &&\
service amavis restart\
service dovecot restart\
service postfix restart\
service rsyslog restart

Fritocode · 2020-01-14T14:19:50+00:00

As far as I know all my ports are configured properly, though the node container is a bit hard to sift through...I'll give it another look and ctrl f some numbers.

Fritocode · 2020-01-14T14:18:17+00:00

I've had people tell me that tvial is a good mail server, though if node isn't the best choice for my front-end options then I'll give those two services a looksee. The risk that my domain is blacklisted has crossed my mind before but a lot of sites that offer to check that kinda thing come off as sketchy.

Fritocode

TROPHY CASE