# Load the golang image
FROM golang:1.21.0 as go-builder
# Then the node image
FROM node:20.5.0 as builder

# Copy golang into the node image
COPY --from=go-builder /usr/local/go /usr/local/go

# Now our base image is ready.

# Continue as normal
WORKDIR /go/src/app

# Set our build environment
ENV GOPATH=/go
ENV PATH=$GOPATH/bin:/usr/local/go/bin:$PATH
ENV GOCACHE=/tmp/.go-build-cache
# This variable communicates to the service that it's running inside
# a docker container.
ENV ENV_DOCKER=true

# Copy dockerignore files
COPY .dockerignore ./

# Install go deps using the cache
COPY go.mod go.sum Makefile ./
RUN --mount=type=cache,target=/go/pkg/mod/ \
  go mod download -x

# Install node deps
COPY frontend/package.json frontend/package-lock.json frontend/
# Set npm cache to /tmp/.npm-cache
RUN npm config set cache /tmp/.npm-cache --global
RUN --mount=type=cache,target=/tmp/.npm-cache \
  make install

# Build the frontend
COPY frontend frontend
RUN make frontend

# Build the backend
COPY . .
RUN --mount=type=cache,target=/tmp/.go-build-cache \
  make backend

# Now create a new image with just the binary
FROM gcr.io/distroless/static-debian11:nonroot

WORKDIR /app

# Set our runtime environment
ENV ENV_DOCKER=true
ENV GOSHORT_PROD=true

COPY --from=builder /go/src/app/goshort /usr/local/bin/goshort

HEALTHCHECK CMD [ "goshort", "healthcheck" ]

EXPOSE 8080

ENTRYPOINT [ "goshort" ]
CMD [ "serve" ]