feat: add ut and bump go to 1.25 and FUSE3: auto-detects fusermount or fusermount3; falls back to direct mount if neither found. Configurable modes: new flags --fs-file-mode, --fs-dir-mode, --fs-link-mode (octal, e.g. 0400/0500). Non-nydus clarity: returns ENOENT for diff on non-nydus layers; blob/info still available. Crash recovery: best-effort unmount of orphan bind mounts at startup." #271

	name: CI

	on:
	push:
	branches: ["*"]
	pull_request:
	branches: [main]

	jobs:
	build:
	name: Build
	timeout-minutes: 10
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v4
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: "1.25"
	- name: Login ghcr
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Build
	run: \|
	curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/HEAD/install.sh \| sh -s -- -b $(go env GOPATH)/bin v2.5.0
	export PATH=$PATH:$(go env GOPATH)/bin
	make check
	make build
	- name: Test
	run: \|
	NYDUS_VERSION=v2.1.6
	wget https://github.com/dragonflyoss/image-service/releases/download/$NYDUS_VERSION/nydus-static-$NYDUS_VERSION-linux-amd64.tgz
	sudo tar xzvf nydus-static-$NYDUS_VERSION-linux-amd64.tgz --wildcards --strip-components=1 -C /usr/bin/ nydus-static/*
	sudo mkdir -p /var/lib/nydus-store
	sudo cp misc/nydus-config.json /etc/nydusd-config.json
	sudo cp misc/storage.conf /etc/containers/storage.conf
	nohup sudo bin/nydus-store --log-to-stdout --log-level info --config-path /etc/nydusd-config.json --root /var/lib/nydus-store &
	sudo podman run -it ghcr.io/dragonflyoss/image-service/nginx:nydus-latest echo hello word

Provide feedback