optimizing badger cache, won a 10-15% improvement in most benchmarks

cmd/benchmark/Dockerfile.khatru-badger

@@ -6,7 +6,7 @@ WORKDIR /build
 COPY . .
 
 # Build the basic-badger example
-RUN echo ${pwd};cd examples/basic-badger && \
+RUN cd examples/basic-badger && \
     go mod tidy && \
     CGO_ENABLED=0 go build -o khatru-badger .
 
@@ -15,8 +15,9 @@ RUN apk --no-cache add ca-certificates wget
 WORKDIR /app
 COPY --from=builder /build/examples/basic-badger/khatru-badger /app/
 RUN mkdir -p /data
-EXPOSE 3334
+EXPOSE 8080
 ENV DATABASE_PATH=/data/badger
+ENV PORT=8080
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
-  CMD wget --quiet --tries=1 --spider http://localhost:3334 || exit 1
+  CMD wget --quiet --tries=1 --spider http://localhost:8080 || exit 1
 CMD ["/app/khatru-badger"]