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Docs: inline function Dockerfile, remove kfn download link #4734

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Docs: inline function Dockerfile, remove kfn download link #4734

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15 changes: 12 additions & 3 deletions documentation/content/en/book/05-developing-functions/_index.md
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Expand Up @@ -350,9 +350,18 @@ standard input. You can now debug the KRM function in the VSCode debugger.

Build the image

The "get-started" package provides the `Dockerfile` that you can download using:
```shell
wget https://raw.githubusercontent.com/kptdev/krm-functions-sdk/main/go/kfn/commands/embed/Dockerfile

@CsatariGergely CsatariGergely Sep 7, 2026

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Should we even remove this file?

@aravindtga aravindtga Sep 7, 2026

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Yes. The kfn tool is being removed from the project (issue #4731). That removal deletes go/kfn/commands/embed/Dockerfile, so the wget link this PR removes would otherwise become a dead link.

Create a `Dockerfile` in your function's directory:
```dockerfile
FROM golang:1.26-alpine3.23
ENV CGO_ENABLED=0
WORKDIR /go/src/
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN go build -o /usr/local/bin/function ./
FROM scratch
COPY --from=0 /usr/local/bin/function /usr/local/bin/function
ENTRYPOINT ["function"]
```

```shell
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