Notes on Building Images on a Mac

https://docs.google.com/document/d/1KAibZZ4M4OtJ9Wgb-PJWcdmXLGiRzpVUxEss7dYZlxE/edit

Instructions

1. In .dockerignore > remove web/dist
2. In Dockerfile.local (or whatever Dockerfile you're using to build) - don't build npm/yarn install because it hangs on a Mac. You need to build the dist files locally -- this is all contains all the javascript files you'll need to run your application -- the executable files (these are agnostic to your platform so we can build them on our local machine then copy them into the image).

• comment out RUN npm install --global yarn
• comment out RUN make install-frontend
• comment out RUN make build-frontend
• the dist files in this case are in web so COPY web/ web/ will copy the executable web/dist into our image

# openshift/monitoring-plugin > Dockerfile.local
FROM registry.redhat.io/ubi9/nodejs-20-minimal:1-51 AS web-builder

WORKDIR /opt/app-root

# RUN npm install --global yarn

ENV HUSKY=0

COPY Makefile Makefile
COPY web/ web/

# RUN make install-frontend
# RUN make build-frontend

# Almost all images from Red Hat are still on go1.21, however I found one that the cne team has
# created. Once official Red Hat images are available for local development and pulling this
# should be updated
FROM quay.io/redhat-cne/openshift-origin-release:rhel-9-golang-1.22-openshift-4.17 as go-builder

WORKDIR /opt/app-root

COPY Makefile Makefile
COPY go.mod go.mod
COPY go.sum go.sum

RUN go mod download

COPY cmd/ cmd/
COPY pkg/ pkg/

RUN go build -mod=mod -o plugin-backend cmd/plugin-backend.go

FROM registry.access.redhat.com/ubi9/ubi-minimal

RUN microdnf install nginx findutils && \
    mkdir /var/cache/nginx && \
    chown -R 1001:0 /var/lib/nginx /var/log/nginx /run && \
    chmod -R ug+rwX /var/lib/nginx /var/log/nginx /run

USER 1001

COPY --from=web-builder /opt/app-root/web/dist /opt/app-root/web/dist
COPY --from=go-builder /opt/app-root/plugin-backend /opt/app-root

COPY --from=web-builder /opt/app-root/web/dist /usr/share/nginx/html

ENTRYPOINT ["nginx", "-g", "daemon off;"]

# When nginx is removed from CMO, we can use the following ENTRYPOINT instead
# After it has been removed add the CI checks to this repo. [example](https://github.com/openshift/release/pull/56011)
# ENTRYPOINT ["/opt/app-root/plugin-backend", "-static-path", "/opt/app-root/web/dist"]