ARG GO_IMAGE=quay.io/airshipit/golang:1.16.8-alpine
ARG PLUGINS_BUILD_IMAGE=quay.io/airshipit/alpine:3.13.5
ARG PLUGINS_RELEASE_IMAGE=quay.io/airshipit/alpine:3.13.5

FROM ${PLUGINS_BUILD_IMAGE} as ctls
# Inject custom root certificate authorities if needed
# Docker does not have a good conditional copy statement and requires that a source file exists
# to complete the copy function without error.  Therefore the README.md file will be copied to
# the image every time even if there are no .crt files.
RUN apk update && apk add curl
COPY ./certs/* /usr/local/share/ca-certificates/
RUN update-ca-certificates
ARG CCTL_VERSION=0.4.4
RUN curl -L https://github.com/kubernetes-sigs/cluster-api/releases/download/v${CCTL_VERSION}/clusterctl-linux-amd64 -o /clusterctl
RUN chmod +x /clusterctl

FROM ${GO_IMAGE} as function
# Inject custom root certificate authorities if needed
# Docker does not have a good conditional copy statement and requires that a source file exists
# to complete the copy function without error.  Therefore the README.md file will be copied to
# the image every time even if there are no .crt files.
COPY ./certs/* /usr/local/share/ca-certificates/
RUN update-ca-certificates
ENV PATH "/usr/local/go/bin:$PATH"
ENV CGO_ENABLED=0
WORKDIR /go/src/
COPY image/go.mod image/go.sum ./
RUN go mod download
COPY image/ ./
RUN go build -v -o /usr/local/bin/config-function ./

FROM ${PLUGINS_RELEASE_IMAGE} as release
# Inject custom root certificate authorities if needed
# Docker does not have a good conditional copy statement and requires that a source file exists
# to complete the copy function without error.  Therefore the README.md file will be copied to
# the image every time even if there are no .crt files.
RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
COPY ./certs/* /usr/local/share/ca-certificates/
RUN update-ca-certificates
COPY --from=ctls /clusterctl /usr/local/bin/
COPY --from=function /usr/local/bin/config-function /usr/local/bin/config-function
ENV HOME=/workdir
WORKDIR $HOME/.cluster-api
RUN chmod -R a+w $HOME/.cluster-api
CMD ["config-function"]