Build and package for the platform image¶

Azure Functions runs Go applications on a platform-provided Ubuntu image. You deploy your application; Azure maintains the Functions host and container image.

You don't need a Dockerfile or container registry.

Note

Go support is currently in preview on the Flex Consumption plan.

Platform image¶

Platform runtime	Runtime version	Base OS	Architecture	Image pattern	Description
`native`	`1.0`	Ubuntu Noble	Linux x64	`mcr.microsoft.com/azure-functions/noble/flexconsumption:<HOST_VERSION>-native1.0`	Azure Functions host image for native executables, including Go applications.

Azure selects and updates the host version. You don't select or deploy this image.

Build and package¶

Build with Core Tools¶

From the function project root, create a deployment package:

func pack --output functionapp.zip

Core Tools builds the Go application for Linux x64 and packages it with the required Functions files.

Package a prebuilt executable¶

Important

The executable must be named app.

To package an executable that you built yourself:

CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o app .
func pack --no-build --output functionapp.zip

Core Tools marks app as executable in the ZIP metadata.

To create the ZIP directly on Linux:

FILES=(app host.json)
[ -f worker.config.json ] && FILES+=(worker.config.json)
zip -r functionapp.zip "${FILES[@]}"

See Deployment for supported deployment methods.