Anyone using "docker run" instead of "docker compose"?

For the vast majority of docker images, the documentation only mention a super long and hard to understand “docker run” one liner.

Why nobody is placing an example docker-compose.yml in their documentation? It’s so tidy and easy to understand, also much easier to run in the future, just set and forget.

If every image had an yml to just copy, I could get it running in a few seconds, instead I have to decode the line to become an yml

I want to know if it’s just me that I’m out of touch and should use “docker run” or it’s just that an “one liner” looks much tidier in the docs. Like to say “hey just copy and paste this line to run the container. You don’t understand what it does? Who cares”

The worst are the ones that are piping directly from curl to “sudo bash”…

ilmagico,

I don’t think you’re out of touch, just use docker compose. It’s not that hard to conver the docker run example command line into a neat docker-compose.yml, if they don’t already provide one for you. So much better than just running containers manually.

Also, you should always understand what any command or docker compose file does before you run it! And don’t blindly curl | bash either, download the bash script and look at it first.

platysalty,

Nah I'll just copy paste half the tutorial in one go and then blame others when things break

radiated,

Average linux user /s

d4nm3d,

you don’t have to decode anything… just throw it in here :

www.composerize.com

snapsofnature,

I was just going to say this. Amazing resource!

Nyknyak,

Just what I was hoping to find here!

OmltCat,

Because it’s “quick start”. Least effort to get a taste of it. For actual deployment I would use compose as well.

Many project also have a example docker-compose.yml in the repository if you dig not so deep into it

There is www.composerize.com to convert run command to compose. Works ~80% of the time.

I honestly don’t understand why anyone would make “curl and bash” the officially installation method these days, with docker around. Unless this is the ONLY thing you install on the system, so many things can go wrong.

Shrek,

I used to host composerize. Now I host it-tools which has its own version and many other super helpful tools!

Heastes,

I was going to mention it-tools. It’s great!
And if you need more stuff in a similar vein, cyberchef is also pretty neat.

Shrek,

Nice! I wonder if there’s anything one has that the other doesn’t.

anonymoose,
@anonymoose@lemmy.ca avatar

Out of curiosity, is there much overhead to using docker than installing via curl and bash? I’m guessing there’s some redundant layers that docker uses?

Shrek,

Of course, but the amount of overhead completely depends per container. The reason I am willing to accept the -in my experience- very small amount of overhead I typically get is that the repeatability is amazing with docker.

My first server was unRAID (freebsd, not Linux), I setup proxmox (debian with a webui) later. I took my unRAID server down for maintenance but wanted a certain service to stay up. So I copied a backup from unRAID to another server and had the service running in minutes. If it was a package, there is no guarantee that it would have been built for both OSes, both builds were the same version, or they used the same libraries.

My favorite way to extend the above is Docker Compose. I create a folder with a docker-compose.yml file and I can keep EVERYTHING for that service in a single folder. unRAID doesn’t use Docker Compose in its webui. So, I try to stick to keeping things in Proxmox for ease of transfer and stuff.

anonymoose,
@anonymoose@lemmy.ca avatar

Makes sense! I have a bunch of services (plex, radarr, sonarr, gluetun, etc) on my media server on Armbian running as docker containers. The ease of management is just something else! My HC2 doesn’t seem to break a sweat running about a dozen containers, so the overhead can’t be too bad.

Shrek,

Yeah, that’s going to come completely down to the containers you’re running and the people who designed them. If the container is built on Alpine Linux, you can pretty much trust that it’s going to have barely any overhead. But if a container is built on an Ubuntu Docker image. It will have a bunch of services that probably aren’t needed in a typical docker container.

anonymoose,
@anonymoose@lemmy.ca avatar

Good point. Most containers I’ve used do seem to use Alpine as a base. Found this StackOverflow post that compared native vs container performance, and containers fair really well!

Shrek,

It seems like that data is from 2014 as well. I’m sure the numbers would have improved in almost ten years too!

macstainless,

Omg I never knew about composerize or it-tools. This would save me a ton of headaches. Absolutely using this in the future.

lonlazarus,

I’m curious to hear from the runners. I use compose and I feel the same, it’s more readable and editable and it allows me to backup the command by backing up the docker-compose.yml

alteredEnvoy,

When orchestration or provisioning tools are used (Ansible, kurbernetes, etc…), creating networks and containers are equally readable in code. The way docker compose is designed makes it hard to integrate with these tools.

lonlazarus,

This is the response I was hoping to hear. I’m primarily a home-automation/self-hosted enthusiast, not necessarily a infrastructure enthusiast. As of yet, I haven’t felt the need for using more involved orchestration tools/infra.

jalim,

Something that always confused me was how docker doesn’t come with compose installed as a core component.

shnizmuffin,
@shnizmuffin@lemmy.inbutts.lol avatar

It does now.

radiated,

docker compose vs docker-compose. Yes I know it’s stupid.

jalim,

Well today I learned something! I’ve been using docker-compose for 5+ years now and I never happened upon the addition of compose to docker haha.

It’s also the issue with the internet and all the fantastic guides which even if they were written 12 months ago, are already out of date!

Max_P,
@Max_P@lemmy.max-p.me avatar

Plain docker is useful when running some simple containers, or even one-off things. A lot of people thing about containers as long running services, but there’s also many containers that are for running essentially a single command to completion and then shuts down.

There’s also alternate ways to handle containers, for example Podman is typically used with systemd services as unlike Docker it doesn’t work through a persistent daemon, so the configuration goes to a service.

I typically skip the docker-compose for simple containers, and turn to compose for either containers with loads of arguments or multi-container things.

Also switching between Docker and Podman depending on the machine and needs.

hoodlem,

Totally agree. I need to then pick apart the run command to make the docker compose file, then get something wrong and need to do a search.

Knusper,

Personally, I do usually want the docker run command. Much easier to use when orchestrating the deployment with other tools.

For readability, I just line-break the command after each argument…

AlexKalopsia,

I used docker run when I first started, I think it’s a fairly easy entry point that “just works”.

However I would never really go back to it, since compose is a lot tighter and offers a better sense of overview and control

SilentMobius, (edited )

Docker-compose is a orchestration tool that wraps around the inbuilt docker functions that are exposed like “docker run”, when teaching people a tool you generally explain the base functions of the tool and then explain wrappers around that tool in terms of the functions you’ve already learned.

Similarly when you have a standalone container you generally provide the information to get the container running in terms of base docker, not an orchestration tool… unless the container must be used alongside other containers, then orchestration config is often provided.

krolden,
@krolden@lemmy.ml avatar

Ive almost completely moved to podman managed by systemd and I highly recommend it.

freundTech,

Do you use podman run followed by podman generate or are you using quadlet?

Quadlet is integrated in podman 4.4 and up and makes it possible to declare your containers in .container files that look like systems unit files and still get the full systems integration: redhat.com/…/multi-container-application-podman-q…

krolden,
@krolden@lemmy.ml avatar

I just generate them. Never heard of quadlet I’m gonna check it out, thanks.

lkami,

I use docker to test individual container images. Anything long running is getting a Kubernetes manifest. I never use docker compose, except when supporting developers.

alteredEnvoy,

I am not using docker-compose personally, and moving away from it at work, because it is only a CLI client and doesn’t integrate with other tools except she’ll scripts.

RedShadowWizard,

Virgin docker compose. Chad Kubectl apply.

antsu,

Kubernetes is just docker-compose with extra steps.

/s

Toribor,
@Toribor@corndog.uk avatar

I’ve started replacing my docker compose files with pure ansible that is the equivilent of doing docker run. My ansible playbooks look almost exactly like my compose file but they can also create folders, set config files or cycle services when configs are updated.

It’s been a bit of a learning process but it’s replaced a lot what was previously documentation with code instead.

Zephyr,

I did the same, but I started from my list of run scripts… I used ChatGPT to create them, took 2 minutes…

Toribor,
@Toribor@corndog.uk avatar

Hahaha, I’ve been using ChatGPT in the exact same way. It requires a bit of double-checking but it really speeds things up a lot.

CaptainHowdy,

Check out the GitHub project ansible-nas

Toribor,
@Toribor@corndog.uk avatar

ansible-nas

Wow, yeah this is exactly the sort of roles/playbooks that I’ve been building. I’m definitely using this as a source before starting my own from scratch. Thanks for sharing.

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