Init error launchin golang lambda with Chi router

[DuncanScu]

Hey, dont kno wif anyone can help with this. But im hitting an issue when i deploy my lambda. Its integrated with an API Gateway, and when I curl the gateway I get an internal server error response and i see the following in the lambda logs. Has anyone got an idea on where to start with debugging this?

EXTENSION Name: lambda-adapter State: LaunchError Events: []
INIT_REPORT Init Duration: 6.37 ms Phase: init Status: error Error Type: Extension.LaunchError

[DuncanScu]

For reference, this is my Dockerfile, which builds and deploys to ECR.

FROM golang:1.25.5-alpine AS builder
RUN apk add --no-cache ca-certificates git
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 \
    go build -o bootstrap cmd/main.go

FROM public.ecr.aws/lambda/provided:al2023
COPY --from=builder /app/bootstrap /var/task/bootstrap
COPY --from=public.ecr.aws/awsguru/aws-lambda-adapter:0.9.1 /lambda-adapter /opt/extensions/lambda-adapter
CMD ["bootstrap"]

[its-felix]

Even though this doesnt address your root issue, you can instead use the provided.al2023 runtime together with the layer variant arn:aws:lambda:${AWS::Region}:753240598075:layer:LambdaAdapterLayerX86:25 (for amd64)

For the deployment of the go application you then have to zip the binary like so:
zip lambda_bundle.zip bootstrap (where bootstrap is your go binary). Also set the handler in the lambda configuration to bootstrap

[bnusunny]

@DuncanScu In your docker file, the build image is Apline based, but the final image is Amazon Linux 2023 based. Please use the same OS for the build image and final image, such as both use Alpine or both use Amazon Linux 2023.