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Aug 4, 2025
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add env import in container env var docs #24150

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34 changes: 18 additions & 16 deletions src/content/docs/containers/examples/env-vars-and-secrets.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -89,14 +89,16 @@ or secrets in the container-related portion of wrangler configuration.

## Using `envVars` on the Container class

Now, let's define a Container using the `envVars` field in the `Container` class:
Now, let's pass the env vars and secrets to our container using the `envVars` field in the `Container` class:

```js
// https://developers.cloudflare.com/workers/runtime-apis/bindings/#importing-env-as-a-global
import { env } from "cloudflare:workers";
export class MyContainer extends Container {
defaultPort = 8080;
sleepAfter = '10s';
envVars = {
ACCOUNT_NAME: env.ACCOUNT_NAME,
defaultPort = 8080;
sleepAfter = "10s";
envVars = {
ACCOUNT_NAME: env.ACCOUNT_NAME,
ACCOUNT_API_KEY: env.SECRET_STORE.ACCOUNT_API_KEY,
CONTAINER_SECRET_KEY: env.CONTAINER_SECRET_KEY,
};
Expand All @@ -116,17 +118,17 @@ We'll assume that we've set additional secrets in the Secret Store.
```js
export class MyContainer extends Container {
defaultPort = 8080;
sleepAfter = '10s';
sleepAfter = "10s";
manualStart = true;
}

export default {
async fetch(request, env) {
if (new URL(request.url).pathname === '/launch-instances') {
let idOne = env.MY_CONTAINER.idFromName('foo');
if (new URL(request.url).pathname === "/launch-instances") {
let idOne = env.MY_CONTAINER.idFromName("foo");
let instanceOne = env.MY_CONTAINER.get(idOne);

let idTwo = env.MY_CONTAINER.idFromName('foo');
let idTwo = env.MY_CONTAINER.idFromName("foo");
let instanceTwo = env.MY_CONTAINER.get(idTwo);

// Each instance gets a different set of environment variables
Expand All @@ -136,20 +138,20 @@ export default {
ACCOUNT_NAME: env.ACCOUNT_NAME + "-1",
ACCOUNT_API_KEY: env.SECRET_STORE.ACCOUNT_API_KEY_ONE,
CONTAINER_SECRET_KEY: env.CONTAINER_SECRET_KEY_TWO,
}
)
},
});

await instanceTwo.start({
envVars: {
ACCOUNT_NAME: env.ACCOUNT_NAME + "-2",
ACCOUNT_API_KEY: env.SECRET_STORE.ACCOUNT_API_KEY_TWO,
CONTAINER_SECRET_KEY: env.CONTAINER_SECRET_KEY_TWO,
}
)
return new Response('Container instances launched');
},
});
return new Response("Container instances launched");
}

// ... etc ...
}
}
},
};
```