cache docker builds

scripts/build_docker.sh

@@ -10,6 +10,8 @@ docker buildx build \
     --platform=linux/arm64,linux/amd64 \
     --build-arg=VERSION \
     --build-arg=GOFLAGS \
+    --cache-from type=local,src=.cache \
+    --cache-to type=local,dest=.cache \
     -f Dockerfile \
     -t ollama \
     .