diff --git a/Rakefile b/Rakefile
index 9b06ba0..0f5cc6f 100644
--- a/Rakefile
+++ b/Rakefile
@@ -180,25 +180,3 @@ task :clean do
   sh "rm -rf #{BUILD_DIR} && mkdir #{BUILD_DIR}"
   sh "rm -rf #{CACHE_DIR} && mkdir #{CACHE_DIR}"
 end
-
-namespace :release do
-  desc "linux:amd64"
-  task :"linux:amd64" do
-    system("docker buildx build --platform linux/amd64 -f #{DOCKER_DIR}/Dockerfile.linux -t linux-amd64 .")
-    system("docker container create --name linux-amd64-01 linux")
-    system("mkdir -p ./release/linux/amd64")
-    system("docker cp linux-amd64-01:/mruby-devkit/build ./release/linux/amd64")
-    system("docker container rm -f '/linux-amd64-01'")
-    system("tar -czvf ./release/linux-amd64.tar.gz ./release/linux/amd64")
-  end
-
-  desc "linux:arm64"
-  task :"linux:arm64" do
-    system("docker buildx build --platform linux/arm64 -f #{DOCKER_DIR}/Dockerfile.linux -t linux-arm64 .")
-    system("docker container create --name linux-arm64-01 linux")
-    system("mkdir -p ./release/linux/arm64")
-    system("docker cp linux-arm64-01:/mruby-devkit/build ./release/linux/arm64")
-    system("docker container rm -f '/linux-arm64-01'")
-    system("tar -czvf ./release/linux-arm64.tar.gz ./release/linux/arm64")
-  end
-end
diff --git a/docker/Dockerfile.linux b/docker/Dockerfile.linux
deleted file mode 100644
index e14df8f..0000000
--- a/docker/Dockerfile.linux
+++ /dev/null
@@ -1,15 +0,0 @@
-FROM alpine:latest
-
-RUN apk update
-RUN apk add \
-  build-base tzdata \
-  ruby-dev \
-  git curl wget openssh
-RUN echo "Asia/Shanghai" >  /etc/timezone
-RUN apk add ruby
-RUN gem install bundler
-RUN gem install rake
-
-
-RUN git clone https://github.com/Mark24Code/mruby-devkit.git && cd mruby-devkit && rake build
-
diff --git a/release/linux-amd64.tar.gz b/release/linux-amd64.tar.gz
deleted file mode 100644
index b928547..0000000
Binary files a/release/linux-amd64.tar.gz and /dev/null differ
diff --git a/release/linux-arm64.tar.gz b/release/linux-arm64.tar.gz
deleted file mode 100644
index d81711e..0000000
Binary files a/release/linux-arm64.tar.gz and /dev/null differ