Using custom golang plugins with the Kong Ubuntu image

Dockerfile

# To build and load custom GO plugins into the Kong Ubuntu image
# we use a multistage docker build. The first stage uses the golang
# image to build the plugin. The second stage then copies that plugin
# into the Kong Ubuntu image.

# Build the golang plugin
FROM golang:alpine as build

WORKDIR /plugin
COPY go-plugins/* ./
RUN go build go-hello.go

# Copy the plugin into the kong-gateway image as root:
# ref: https://docs.konghq.com/gateway/latest/plugin-development/pluginserver/plugins-kubernetes/
FROM kong/kong-gateway:3.2.2.1-ubuntu
USER root
COPY --from=build /plugin/go-hello /usr/local/bin/go-hello

# Return the image to defaults for runtime
USER kong
ENTRYPOINT ["/entrypoint.sh"]
EXPOSE 8000 8443 8001 8444
STOPSIGNAL SIGQUIT
HEALTHCHECK --interval=10s --timeout=10s --retries=10 CMD kong health
CMD ["kong", "docker-start"]

Dockerfile-amd64

# To build and load custom GO plugins into the Kong Ubuntu image
# we use a multistage docker build. The first stage uses the golang
# image to build the plugin. The second stage then copies that plugin
# into the Kong Ubuntu image.

# Build the golang plugin
FROM --platform=linux/amd64 golang:alpine as build

WORKDIR /plugin
COPY go-plugins/* ./
RUN go build go-hello.go

# Copy the plugin into the kong-gateway image as root:
# ref: https://docs.konghq.com/gateway/latest/plugin-development/pluginserver/plugins-kubernetes/
FROM --platform=linux/amd64 kong/kong-gateway:3.2.2.1-ubuntu
USER root
COPY --from=build /plugin/go-hello /usr/local/bin/go-hello

# Return the image to defaults for runtime
USER kong
ENTRYPOINT ["/entrypoint.sh"]
EXPOSE 8000 8443 8001 8444
STOPSIGNAL SIGQUIT
HEALTHCHECK --interval=10s --timeout=10s --retries=10 CMD kong health
CMD ["kong", "docker-start"]