feat: establish secure update foundation

Dockerfile

@@ -1,7 +1,14 @@
 # syntax=docker/dockerfile:1.7
+ARG VERSION=v1.4.0
+ARG MINIMUM_UPDATE_VERSION=v1.4.0
+ARG MINIMUM_AGENT_PROTOCOL=2
+ARG RUNTIME_CONTRACT_VERSION=2
+ARG DATABASE_CONTRACT_VERSION=1
+ARG SCHEMA_VERSION=11
+
 FROM golang:1.25.13-alpine AS build
 
-ARG VERSION=v1.3.0
+ARG VERSION
 
 RUN apk add --no-cache build-base
 WORKDIR /src
@@ -10,23 +17,37 @@ COPY go.mod go.sum ./
 RUN go mod download
 
 COPY . .
-RUN CGO_ENABLED=1 GOOS=linux go build -trimpath -ldflags="-s -w -X github.com/root-kdw12/hetzner-api-dyndns-records-webinterface/internal/buildinfo.Version=${VERSION}" -o /out/dyndns-web ./cmd/dyndns-web && \
-    CGO_ENABLED=0 GOOS=linux go build -trimpath -ldflags="-s -w" -o /out/update-agent ./cmd/update-agent
+RUN CGO_ENABLED=1 GOOS=linux go build -trimpath -ldflags="-s -w -X github.com/root-kdw12/hetzner-api-dyndns-records-webinterface/internal/buildinfo.Version=${VERSION}" -o /out/domain-control ./cmd/dyndns-web
 
 FROM alpine:3.23.2 AS runtime
 
+ARG VERSION
+ARG MINIMUM_UPDATE_VERSION
+ARG MINIMUM_AGENT_PROTOCOL
+ARG RUNTIME_CONTRACT_VERSION
+ARG DATABASE_CONTRACT_VERSION
+ARG SCHEMA_VERSION
+
 RUN apk add --no-cache ca-certificates && \
     addgroup -S -g 10001 dyndns && \
     adduser -S -D -H -u 10001 -G dyndns dyndns && \
     mkdir -p /data /secrets && chown dyndns:dyndns /data /secrets
 
-COPY --from=build /out/dyndns-web /usr/local/bin/dyndns-web
-COPY --from=build /out/update-agent /usr/local/bin/update-agent
+COPY --from=build /out/domain-control /usr/local/bin/domain-control
+RUN ln -s domain-control /usr/local/bin/update-agent
+
+LABEL org.opencontainers.image.version="${VERSION}" \
+      de.j-mahler.domain-control.minimum-update-version="${MINIMUM_UPDATE_VERSION}" \
+      de.j-mahler.domain-control.minimum-agent-protocol="${MINIMUM_AGENT_PROTOCOL}" \
+      de.j-mahler.domain-control.runtime-contract="${RUNTIME_CONTRACT_VERSION}" \
+      de.j-mahler.domain-control.database-contract="${DATABASE_CONTRACT_VERSION}" \
+      de.j-mahler.domain-control.schema-version="${SCHEMA_VERSION}"
 
 USER dyndns:dyndns
 WORKDIR /data
 EXPOSE 8080
 
-HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 CMD ["/usr/local/bin/dyndns-web", "healthcheck"]
+HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 CMD ["/usr/local/bin/domain-control", "healthcheck"]
 
-ENTRYPOINT ["/usr/local/bin/dyndns-web"]
+ENTRYPOINT ["/usr/local/bin/domain-control"]
+CMD ["serve"]