chore: drop root in container

.github/workflows/container.yml

@@ -13,7 +13,6 @@ jobs:
           sudo rm -rf /usr/local/lib/android
           sudo rm -rf /opt/ghc
           sudo rm -rf /opt/hostedtoolcache/CodeQL
-          sudo docker image prune --all --force
           sudo df -h
       - uses: actions/checkout@v4
       # reference: https://github.com/containers/podman/discussions/17868
@@ -28,7 +27,7 @@ jobs:
           path: |
             ~/.local/share/containers
             ~/.config/containers
-          key: ${{ runner.os }}-${{ hashFiles('**/*.Dockerfile', 'build_image.sh', 'VERSION') }}
+          key: ${{ runner.os }}-${{ hashFiles('**/*.Dockerfile', 'build_image.sh', 'docker-entrypoint.sh', 'VERSION') }}
       - name: Login to Container Registry
         uses: redhat-actions/podman-login@v1
         with:

Runner.Dockerfile

@@ -15,7 +15,7 @@ FROM docker.io/library/debian:bookworm-slim
 
 WORKDIR /app
 RUN    apt-get update && apt-get upgrade -y \
-    && apt-get install -y ca-certificates libnl-route-3-200 libprotobuf32 tini \
+    && apt-get install -y ca-certificates gosu libnl-route-3-200 libprotobuf32 tini \
     && apt-get clean && rm -rf /var/lib/apt/lists
 
 # rootfs
@@ -31,5 +31,8 @@ COPY --from=base /builder/config.docker.yaml /app
 COPY --from=base /builder/docker-entrypoint.sh /app
 COPY --from=base /builder/woj /app
 
+# tell entrypoint to setup runner env
+ENV RUNNER_IMAGE=1
+
 # reap zombies
 ENTRYPOINT ["/usr/bin/tini", "/app/docker-entrypoint.sh"]

Server.Dockerfile

@@ -12,7 +12,7 @@ RUN find /app -type f -name "*.map" -delete
 FROM docker.io/library/alpine
 
 WORKDIR /app
-RUN apk --no-cache add tzdata ca-certificates bash
+RUN apk --no-cache add tzdata ca-certificates bash su-exec
 
 COPY --from=base /builder/config.docker.yaml /app
 COPY --from=base /builder/docker-entrypoint.sh /app

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   server:
-    image: git.0x7f.app/woj/woj-server:1.3.1-dev
+    image: quay.io/ldcraft/woj-server:1.3.1-dev
     restart: unless-stopped
     healthcheck:
       test: [ "CMD", "wget", "-q", "-O", "/dev/null", "http://127.0.0.1:8000/health" ]
@@ -27,9 +27,10 @@ services:
       - "8000:8000"
 
   runner:
-    image: git.0x7f.app/woj/woj-runner:1.3.1-dev
+    image: quay.io/ldcraft/woj-runner:1.3.1-dev
     restart: unless-stopped
     command: runner
+    # moby/moby#42040, enable privileged option to make cgroup2 mount as rw
     privileged: true
     cap_add:
       - SYS_ADMIN
@@ -40,7 +41,6 @@ services:
       - STORAGE_SECRET_KEY=secret_key
       - STORAGE_BUCKET=woj
       - DEVELOPMENT=true
-      - SETUP_CGROUP=true
     volumes:
       - runner:/app/resource/runner/user
       - /etc/localtime:/etc/localtime:ro

docker-entrypoint.sh

@@ -136,11 +136,45 @@ setup_cgroups() {
     sed -e 's/ / +/g' -e 's/^/+/' < /sys/fs/cgroup/nsjail/cgroup.controllers > /sys/fs/cgroup/nsjail/cgroup.subtree_control
 }
 
-if [ -n "$SETUP_CGROUP" ]; then
-    setup_cgroups
-fi
+setup_user_runner() {
+    # runner use debian as base image
+    groupadd --gid 1000            woj || true
+    useradd  --gid 1000 --uid 1000 woj || true
+    # runner data
+    chown -R woj:woj /app/resource/runner/problem
+    chown -R woj:woj /app/resource/runner/tmp
+    chown -R woj:woj /app/resource/runner/user
+    # rootfs mount path
+    chown -R woj:woj /app/resource/runner/framework/rootfs/full/woj
+    chown -R woj:woj /app/resource/runner/framework/rootfs/run/woj
+    # cgroups
+    chown -R woj:woj  /sys/fs/cgroup/nsjail
+    chown -R woj:root /sys/fs/cgroup/cgroup.procs
+    # create run dir: nsjail will try to use it
+    mkdir -p         /run/user/1000
+    chown -R woj:woj /run/user/1000
+    chmod 700        /run/user/1000
+}
 
+setup_user_server() {
+    # server use alpine as base image
+    addgroup -g 1000 -S    woj     || true
+    adduser  -u 1000 -S -G woj woj || true
+}
+
+setup_user() {
+    if [ -n "$RUNNER_IMAGE" ]; then
+        setup_user_runner
+    else
+        setup_user_server
+    fi
+}
+
+if [ -n "$RUNNER_IMAGE" ]; then setup_cgroups; fi
 generate_config
+setup_user
 
 log_info "starting woj"
-exec /app/woj "$@"
+if [ -n "$RUNNER_IMAGE" ]; then EXEC=gosu; else EXEC=su-exec; fi
+exec $EXEC woj /app/woj "$@"
+

internal/service/runner/nsjail.go

@@ -113,9 +113,9 @@ func (s *service) JailRun(arg *RunArgs) (RuntimeStatus, error) {
 
 	// build args
 	args := []string{
-		"--quiet",
+		"--really_quiet",
 		"--use_cgroupv2",
-		"--disable_rlimits",                   // Rust requires this
+		"--disable_rlimits",
 		"-m", "none:/tmp:tmpfs:size=67108864", // 64MB tmpfs
 		"-E", "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
 		// following envs must sync with resource/runner