Update Dockerfile

Dockerfile

@@ -20,7 +20,7 @@ ENV GO111MODULE=on \
 
 WORKDIR /build
 RUN git clone https://github.com/MartialBE/one-api.git .
-RUN sed -i'' 's|router.Group("/v1|router.Group("/api/v1|g' /app/router/relay-router.go
+RUN sed -i'' 's|router.Group("/v1|router.Group("/api/v1|g' /build/router/relay-router.go
 RUN go mod download
 COPY --from=builder /build/build ./web/build
 RUN go build -ldflags "-s -w -X 'one-api/common.Version=$(cat VERSION)' -extldflags '-static'" -o one-api