docker: fix volume permission errors

Dockerfile

@@ -15,13 +15,9 @@ RUN /usr/local/go/bin/go generate ./... \
     && /usr/local/go/bin/go build .
 
 FROM ubuntu:22.04
-ENV OLLAMA_HOST 0.0.0.0
-
 RUN apt-get update && apt-get install -y ca-certificates
-RUN groupadd ollama && useradd -m -g ollama ollama
-
 COPY --from=0 /go/src/github.com/jmorganca/ollama/ollama /bin/ollama
-
-USER ollama:ollama
+EXPOSE 11434
+ENV OLLAMA_HOST 0.0.0.0
 ENTRYPOINT ["/bin/ollama"]
 CMD ["serve"]