#
# Copyright 2025 The Sigstore Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Debian 13 (Trixie) image to build binary for distroless/static-debian12
FROM --platform=$BUILDPLATFORM golang:1.26.3-trixie@sha256:0f6b034c99663ea8957e7dae99124e37374cbe7fcb5b5646f19b185f8f976279 AS builder
ARG TARGETOS
ARG TARGETARCH
ARG STORAGE_BACKEND
ENV APP_ROOT=/opt/app-root
ENV GOPATH=$APP_ROOT

WORKDIR $APP_ROOT/src/
ADD go.mod go.sum $APP_ROOT/src/
RUN go mod download

# Add source code
ADD ./cmd/ $APP_ROOT/src/cmd/
ADD ./pkg/ $APP_ROOT/src/pkg/
ADD ./internal/ $APP_ROOT/src/internal/

ARG SERVER_LDFLAGS
# Build server for deployment. Build without cgo since distroless/static-debian12 doesn't include lib/cgo
RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} CGO_ENABLED=0 go build -ldflags "${SERVER_LDFLAGS}" -o rekor-server ./cmd/rekor-server/${STORAGE_BACKEND}

# Multi-stage deployment build
FROM gcr.io/distroless/static-debian13:nonroot@sha256:963fa6c544fe5ce420f1f54fb88b6fb01479f054c8056d0f74cc2c6000df5240 AS deploy
# Retrieve the binary from the previous stage
COPY --from=builder /opt/app-root/src/rekor-server /usr/local/bin/rekor-server
# Set the binary as the entrypoint of the container
CMD ["rekor-server", "serve"]