fix(cloudflare): prevent Docker pull for prebuilt Container images

[adunne09]

Summary

Fixes 401 errors when passing a prebuilt Cloudflare registry image to the Container resource. Previously, the Container resource would attempt to pull the image via Docker even for images already in the CF registry, causing authentication failures.

Changes

alchemy/src/cloudflare/container.ts

• Added resolveImageName() function that normalizes image references following wrangler's logic:
  • Short names like myapp:v1 → registry.cloudflare.com/{accountId}/myapp:v1
  • CF registry without accountId → adds accountId
  • External registries → pass through unchanged
• Short-circuits Container for prebuilt images - constructs Image object directly without Docker operations
• Added validation that throws if both build and image are specified
• For dev mode with CF registry images, throws helpful error directing users to use dev: { remote: true }

alchemy/test/cloudflare/container.test.ts

• Unit tests for resolveImageName() covering short names, CF registry with/without accountId, external registries
• Integration test verifying prebuilt CF registry images skip Docker pull
• Test for mutual exclusivity of build/image props

Behavior Matrix (matches wrangler)

Input	Behavior
Dockerfile path	Build locally, push to CF registry
Registry URI	Pass directly to Cloudflare API (no pull/push)

Example Usage

// Deploy now works without attempting to pull the image first
const container = await Container('my-container', {
  className: 'MyContainer',
  image: `registry.cloudflare.com/my-image:v1`,
});

[sam-goodwin]

Is this in everyone's account?

[Mkassabov]

Did we ever get an answer to this? I see it's still in the diff @adunne09

[adunne09]

as far as I can tell- yes. its used throughout the codebase

https://github.com/search?q=repo%3Aalchemy-run%2Falchemy%20api.accountId&type=code

[Mkassabov]

We are asking about the test-image:v1 being on everyone's account, not the account id existing on API.

[adunne09]

yes, that is handled here: https://github.com/alchemy-run/alchemy/pull/1292/changes#diff-149600075d4f46904c1a039c10e8ef99baf37d63b61c2088d685dfe2e42cc1daR476

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/alchemy-run/alchemy@1292

commit: 0c21ce5

[Mkassabov]

A little concerned with how big the diff is for what seems like a small change but it looks good. Assuming tests pass this is good to merge.

Curious about that test image

[adunne09]

A little concerned with how big the diff is for what seems like a small change but it looks good. Assuming tests pass this is good to merge.

Curious about that test image

yeah there's a lot of comments, i can clean those up if desired.

to address your feedback https://github.com/alchemy-run/alchemy/pull/1292/changes/BASE..4bcba262b94b15cbab75d6fe514c51c4875c7510#r2659859673 - I extended the changes past updating the container deployment logic to also mirror wrangler dev behavior so that overall parity is achieved (or at least closer).