Dockerfile.dev

FROM golang:1.24.5 as builder

# Create and change to the app directory.
WORKDIR /app

# Retrieve application dependencies using go modules.
# Allows container builds to reuse downloaded dependencies.
COPY go.* ./
RUN go mod download

# Copy local code to the container image.
COPY . ./

# Build the binary.
# -mod=readonly ensures immutable go.mod and go.sum in container builds.
RUN CGO_ENABLED=0 GOOS=linux go build -mod=readonly -v -o governor-api

# https://docs.docker.com/develop/develop-images/multistage-build/#use-multi-stage-builds
FROM gcr.io/distroless/static

# Copy the binary to the production image from the builder stage.
COPY --from=builder /app/governor-api /governor-api

# Run the web service on container startup.
ENTRYPOINT ["/governor-api"]
CMD ["serve"]