i have a project that i run with react-router dev, is it possible to run containers at the same time

i have a project that i run with react-router dev, is it possible to run containers at the same time with this on the same project, same wrangler config? i tried and i get workerd/jsg/util.c++:320: error: e = kj/async-io-unix.c++:1509: failed: broken.constructorFailed; jsg-internal.Error: connect(): No such file or directory; address = unix:///var/run/docker.sock
stack: 102b17597 102b1540f 102b15a50 10091350c 100c0b747 100c0d05b 100c12d27 1013e96c0 1013e39b4 100931568 100f00c1b 100948f7f 1009232d3 100949e13 10125e57c 101260a7f 100f032cb 1008dfb38 10107302c 100f86538; sentryErrorContext = jsgInternalError; wdErrId = u6uc42g0bpojgvbp9g8mt5h2.

DDidac i have a project that i run with react-router dev, is it possible to run contain...

DidacOP•10/2/25, 10:16 AM

but the container on its own worker project works fine. when running alongside react-router dev, i get that error. docker image does seem to build though but i don't get the "container image(s) ready"

DidacOP•10/2/25, 12:36 PM

Works only with wrangler dev.. it’s alright

tao•10/2/25, 1:17 PM

whenever I deploy a new version, there is a brief downtime while containers instance restart. I’d like to reduce or eliminate that downtime.Any good suggestions?

kian•10/2/25, 1:24 PM

There shouldn't really be any downtime with multiple instances

Sajad•10/2/25, 1:26 PM

Sajad•10/2/25, 1:27 PM

Why is the site no longer working?
https://tt886399.com

tao•10/2/25, 1:27 PM

is it possible to configure multiple instances for my container ?

tao•10/2/25, 1:29 PM

rn i only have single instace,since we are still in the staging phase and the instance often goes inactive.

kian•10/2/25, 1:46 PM

https://developers.cloudflare.com/containers/platform-details/scaling-and-routing/#scaling-container-instances-with-get - you can set a max_instancesmax_instances in Wrangler but otherwise it is similar to Durable Objects where each Container instance has it's own name that you provide.

kian•10/2/25, 1:51 PM

Basically if you have a single instance (i.e taken to mean you never want two instances of your code running at once) then there is the inevitable blip where we take down the instance to restart it with your new image.

kian•10/2/25, 1:51 PM

If you're happy to have multiple instances at once then you can load balance between them (we have a function in the Containers lib to make that easy)

fforres•10/2/25, 2:58 PM

Hey folks (maybe @kian or @Mike Nomitch )
I remember a call some time ago where we discussed some caveats whith locations where containers would actually be available/served from v/s their durable objects. (DOs where not co-located with a container. I think that's still the case, and ok by us)

So mostly my question is on the locations where the containers are served from. I think I remember this was written down somewhere? (This was pre public beta , so also could've been some stuff written mid-meeting) But cannot seem to find this.

For context, my company's main product relies on a sync engine. The engine being close to our users is kind of important (not as much as the engine being close to DB, but still)

Back then the locations of containers it was a bit of an issue for us, wanted to reevaluate if we could move out of our current provider.

Ffforres Hey folks (maybe @kian or @Mike Nomitch ) I remember a call some time ago where...

Hello, I’m Allie!•10/2/25, 3:20 PM

?pings

SuperHelpflare•10/2/25, 3:20 PM

Please do not ping community members for non-moderation reasons. Doing so will not solve your issue faster and will make people less likely to want to help you.

Salem•10/2/25, 3:32 PM

Is anyone else experiencing wrangler deploy hanging on one Layer?

SSalem Is anyone else experiencing wrangler deploy hanging on one Layer?

Sean•10/2/25, 4:31 PM

Yes, getting this too. Also just complete deployment failures:

╭ Deploy a container application deploy changes to your application
│

✘ [ERROR] Unauthorized


If you think this is a bug then please create an issue at https://github.com/cloudflare/workers-sdk/issues/new/choose

╭ Deploy a container application deploy changes to your application
│

✘ [ERROR] Unauthorized


If you think this is a bug then please create an issue at https://github.com/cloudflare/workers-sdk/issues/new/choose

Sean•10/2/25, 4:32 PM

Also getting the sudden disconnection issue mentioned above

kian•10/2/25, 4:33 PM

Does npx wrangler whoaminpx wrangler whoami show the Containers scope?

Sean•10/2/25, 4:35 PM

Yes, that was the first time I've seen this issue. I tried re-running the deploy command and it's hanging at one layer.

Screenshot_2025-10-02_at_11.35.50_AM.png

Salem•10/2/25, 4:37 PM

I just closed down the terminal and reopened it and it worked eventually after a few tries

Kkian We're already actively looking into it & have a possible fix on the way.

arnar•10/3/25, 11:54 AM

Will you notify in this channel when this potential fix has been released?
It seems from our testing that this is the only issue we have blocking us from starting to route some small part of our production traffic to CF Containers

Aarnar Will you notify in this channel when this potential fix has been released? It se...

Sean•10/3/25, 4:24 PM

Second this, seems to be the only issue blocking us from deploying

piemaking•10/3/25, 6:44 PM

Trying to setup a container from within a NextJs obviously via Opennext.

It’s failing on loading “Cloudflare:workers” from the containers library,

dr.dj•10/4/25, 3:45 PM

Hi all, is there an easy way to tail logs inside your container, ala npm wrangler tail some.container.idnpm wrangler tail some.container.id?

Alex Dahl•10/5/25, 9:25 AM

Containers look great! I'm currently running a bunch of machines on fly.io for my workload. (fast api + duckdb) The only feature missing from containers seem to be the lack of persistent disk, which I use for the duckdb file. I think I can work around that with R2 and lifespan in fast api though!

Can we do an R2 binding for containers or should I set up a typical access/secret key thing?

Edit: pre-emptively answered here! containers-beta

Cloudflare Docs

Frequently Asked Questions

Frequently Asked Questions:

kingkm70•10/5/25, 2:31 PM

Hello - I have a couple of issues with containers.

#1) My container isn't logging anything. I can see a call that passed to container, but nothing shows up in the container logger.

For example:

I have a simple endpoint that passes a ping to the container...

./scripts/ping.sh
- Target URL: https://<cfworker>.workers.dev
{
"success": true
}

This I see in my CF Worker log...
2025-10-05 14:13:01:654 UTC
GET /ping
Error checking 8080: The container is not listening in the TCP address 10.0.0.1:8080

But the:

{
"success": true
}

is returned from my container.

#2) My container is trashing. Meaning I'm seeing it being shutdown every couple of minutes.

I have it set for sleepAfter = "60m"; -- so it shouldn't be going down randomly...

Any insights would be greatly appreciated.

FiveGuys•10/5/25, 5:58 PM

Was in the private BETA and now getting The image registry does not existThe image registry does not exist. User account is linked to profile.

xrendan•10/5/25, 10:59 PM

I am also not seeing any logs from my containers. I just get: There are no events in the selected timeframeThere are no events in the selected timeframe

The container is running as expected, I just don't see any logs for it.

Xxrendan I am also not seeing any logs from my containers. I just get: `There are no even...

kingkm70•10/5/25, 11:28 PM

Me too!

Xxrendan I am also not seeing any logs from my containers. I just get: `There are no even...

kingkm70•10/5/25, 11:33 PM

I'm also getting a lot of thrashing ... meaning my container is being stopped and/or reported as stopped. I have a ping endpoint that is working...meaning I can reach my container...meanwhile I'm seeing the container print the message ...

export class IcebergCommitter extends Container<Env> {

defaultPort = 8080;
sleepAfter = "60m";
envVars = { var stuff };

async fetch(request: Request): Promise<Response> {
return await this.containerFetch(request, this.defaultPort);
}

override onStart() {
console.log('Container successfully started');
}

override onStop() {
console.log('Container successfully shut down');
}

override onError(error: unknown) {
console.log('Container error:', error);
}

async alarm() {
console.log('Alarm called (no-op)');
}

}

I'm seeing alarm called...even though I haven't set any alarms and 'Container successfully shut down' for no apparent reason...

The fact that I can't look at the logs is a bit hard to diagnose. I do see logs on the Durable Object associated with container. I would suggest looking there.

FFiveGuys Was in the private BETA and now getting `The image registry does not exist`. Use...

pandalambda2•10/6/25, 5:12 AM

There no bindings to CF services that you can use in your container, you have to go through the crippled REST frontends for these services such as D1, R2, KV etc..

pandalambda2•10/6/25, 5:12 AM

That said if you read the capnweb blog post there's a hint at the end that suggests to me they'll eventually rollout some SDKs to talk to CF Services with capnweb as the protocol

pandalambda2•10/6/25, 5:13 AM

whoops that was meant to be for aleda145

GeekCorner•10/6/25, 10:55 AM

Would you be able to run a discord gateway bot in Containers with the base plan?

MMike Nomitch Both are planned. First step -> We're working on generic requests from containe...

rdimartino•10/6/25, 2:10 PM

also very interested in the container -> worker request with the specified hostnames you mention here! how do I stay updated on when something like that is live in the beta?

Ppandalambda2 There no bindings to CF services that you can use in your container, you have to...

gruntlord6•10/6/25, 3:41 PM

they don't have internet access do they? I thought the durable object has to handle that. That said the durable object does have access to those things so it can proxy them, but for things like downloading a file thats not really practical

gruntlord6•10/6/25, 3:42 PM

for example I have a container that uploads to R2 with the durable object using multi part uploads, but downloading is another story since the files are too big for the durable object to handle

Kkingkm70 I'm also getting a lot of thrashing ... meaning my container is being stopped an...

Wonky Onion•10/6/25, 4:32 PM

Ah the container package is using alarms under the hood right now to keep your container alive, since the DO has to be alive for the container to be alive. so probably that no-op alarm handler is overriding that and causing the thrashing

you can use scheduleschedule on the container class instead of alarms for now if you need that functionality.

Jonas•10/6/25, 8:24 PM

Is the .exec planned to be released anytime soon?

JJon M.So wait, containers can't actually access R2 yet?

Isaac McFadyen•10/6/25, 11:19 PM

Containers can access R2 but they need to use the S3 API, there's no direct binding yet.

Isaac McFadyen•10/6/25, 11:19 PM

https://developers.cloudflare.com/r2/api/s3/api/

Peps•10/7/25, 9:24 AM

looks like https://developers.cloudflare.com/containers/pricing/#instance-types is still outdated, as I'm not seeing the new instance types there, and it's still showing the deprecated/legacy

dev

dev

type too

Cloudflare Docs

Pricing

Containers are billed for every 10ms that they are actively running at the following rates, with included monthly usage as part of the $5 USD per month Workers Paid plan:

PPeps looks like https://developers.cloudflare.com/containers/pricing/#instance-types ...

kian•10/7/25, 11:59 AM

oop, looks like we only updated /limits/

i have a project that i run with react-router dev, is it possible to run containers at the same time

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