version tracking in dockerfile

Author: zelje

Dockerfile

@@ -10,11 +10,18 @@ COPY . ./
 # Build the applications
 RUN go build -o /app/xrp-indexer ./cmd/indexer/main.go
 
+RUN git describe --tags --always > PROJECT_VERSION && \
+    date --iso-8601=seconds > PROJECT_BUILD_DATE && \
+    git rev-parse HEAD > PROJECT_COMMIT_HASH
+
 FROM debian:latest AS execution
 
 WORKDIR /app
 
 COPY --from=builder /app/xrp-indexer .
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=builder /build/PROJECT_VERSION .
+COPY --from=builder /build/PROJECT_BUILD_DATE .
+COPY --from=builder /build/PROJECT_COMMIT_HASH .
 
 CMD ["./xrp-indexer"]