diff --git a/.dockerignore b/.dockerignore
index bbb2a26..64e6abb 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -4,8 +4,6 @@
 # resource
 resource/deploy
 resource/frontend
-resource/runner/.mark.image
 resource/runner/problem/*
 resource/runner/tmp/*
 resource/runner/user/*
-
diff --git a/Makefile b/Makefile
index 290b653..6279a8b 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ build: swagger dep
 	$(GOBUILD) -o woj ./cmd/woj
 
 clean:
-	rm -f woj
+	rm -f woj coverage.out coverage.html
 
 dep:
 	go mod download
diff --git a/internal/api/runner/handler.go b/internal/api/runner/handler.go
index 009c151..ff6bda3 100644
--- a/internal/api/runner/handler.go
+++ b/internal/api/runner/handler.go
@@ -35,7 +35,7 @@ func NewRunner(i *do.Injector) (Handler, error) {
 		storageService: do.MustInvoke[storage.Service](i),
 	}
 
-	status := hnd.runnerService.EnsureDeps(false)
+	status := hnd.runnerService.EnsureDeps()
 	if status != e.Success {
 		hnd.log.Error("failed to ensure runner dependencies", zap.String("status", status.String()))
 		return nil, errors.New("failed to ensure dependencies")
diff --git a/internal/service/runner/deps.go b/internal/service/runner/deps.go
index e8a913c..db6a683 100644
--- a/internal/service/runner/deps.go
+++ b/internal/service/runner/deps.go
@@ -61,16 +61,7 @@ func (s *service) LoadImage(cfg *depConfig) e.Status {
 	return e.Success
 }
 
-func (s *service) EnsureDeps(force bool) e.Status {
-	mark := filepath.Join(Prefix, ".mark.image")
-
-	// check mark
-	if force {
-		_ = os.Remove(mark)
-	} else if file.Exist(mark) {
-		return e.Success
-	}
-
+func (s *service) EnsureDeps() e.Status {
 	// full
 	fullImage := &depConfig{
 		tarball: filepath.Join(TmpDir, "ubuntu-full.tar.gz"),
@@ -89,8 +80,5 @@ func (s *service) EnsureDeps(force bool) e.Status {
 		return e.RunnerDepsBuildFailed
 	}
 
-	// mark
-	_, _ = os.Create(mark)
-
 	return e.Success
 }
diff --git a/internal/service/runner/service.go b/internal/service/runner/service.go
index fca0f9d..e7c5aff 100644
--- a/internal/service/runner/service.go
+++ b/internal/service/runner/service.go
@@ -19,7 +19,7 @@ var _ Service = (*service)(nil)
 
 type Service interface {
 	// EnsureDeps build docker images
-	EnsureDeps(force bool) e.Status
+	EnsureDeps() e.Status
 	// NewProblem = Download + Parse + Prebuild
 	NewProblem(meta *JudgeMeta, url string, force bool) (*Config, e.Status)
 
diff --git a/resource/runner/.gitignore b/resource/runner/.gitignore
index 0f3e631..d82ed17 100644
--- a/resource/runner/.gitignore
+++ b/resource/runner/.gitignore
@@ -1,4 +1,2 @@
-# docker image mark
-.mark.*
 # other tmp files
 *.zip
diff --git a/resource/runner/scripts/prepare_images.sh b/resource/runner/scripts/prepare_images.sh
deleted file mode 100755
index 2db7ae4..0000000
--- a/resource/runner/scripts/prepare_images.sh
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/usr/bin/env bash
-
-SCRIPT_PATH=$(cd "$(dirname "$0")" && pwd)
-. "$SCRIPT_PATH/common.sh"
-
-cd "$(dirname "$0")"/../ || exit 1
-
-# Check Mark
-if [ -f ./.mark.image ]; then
-    log_warn "Docker images already prepared"
-    log_warn "If you want to re-prepare the images, please remove the file $(pwd)/.mark.image"
-    exit 1
-fi
-
-log_info "Preparing image..."
-log_info "Checking $DOCKER - $($DOCKER --version)"
-
-# Full
-if [ -f ./tmp/ubuntu-full.tar.gz ]; then
-    log_info "Importing Full Image"
-    gzip -d -c ./tmp/ubuntu-full.tar.gz | $DOCKER load || (log_error "Import Full Image failed" && exit 1)
-else
-    log_info "Pulling Full Image"
-    if ! $DOCKER pull git.0x7f.app/woj/ubuntu-full:latest; then
-        log_warn "Pull failed, building from scratch"
-        log_info "Building Full Image"
-        $DOCKER build -t git.0x7f.app/woj/ubuntu-full:latest -f scripts/ubuntu-full.Dockerfile . || (log_error "Build Full Image failed" && exit 1)
-    fi
-fi
-
-# Tiny
-if [ -f ./tmp/ubuntu-tiny.tar.gz ]; then
-    log_info "Importing Tiny Image"
-    gzip -d -c ./tmp/ubuntu-tiny.tar.gz | $DOCKER load || (log_error "Import Tiny Image failed" && exit 1)
-else
-    log_info "Pulling Tiny Image"
-    if ! $DOCKER pull git.0x7f.app/woj/ubuntu-run:latest; then
-        log_warn "Pull failed, building from scratch"
-        log_info "Building Tiny Image"
-        $DOCKER build -t git.0x7f.app/woj/ubuntu-run:latest -f scripts/ubuntu-run.Dockerfile . || (log_error "Build Tiny Image failed" && exit 1)
-    fi
-fi
-
-# Mark
-if [ "$1" == "save" ]; then
-    log_info "Saving Images"
-    $DOCKER save git.0x7f.app/woj/ubuntu-full:latest | gzip -9 >./tmp/ubuntu-full.tar.gz
-    $DOCKER save git.0x7f.app/woj/ubuntu-run:latest | gzip -9 >./tmp/ubuntu-tiny.tar.gz
-else
-    touch ./.mark.image
-fi
-
-log_info "Done"