Create an init process in Rust that can mount the initial file systems appropriately.

docker/buildramfs.sh

@@ -1,40 +1,12 @@
 #!/bin/bash
  
-ARCH="x86_64"
-BB_VER="1.31.0"
- 
 # Dirs
-mkdir -p root
-cd root
-mkdir -p bin dev etc lib mnt proc sbin sys tmp var
+mkdir -p image/{bin,dev,etc,lib,mnt,proc,sbin,sys,tmp,var}
+cd image
+mkdir -p 
 cd -
  
-# Utils
-if [ ! -f "root/bin/busybox" ]; then
-    curl -L "https://www.busybox.net/downloads/binaries/${BB_VER}-defconfig-multiarch-musl/busybox-${ARCH}" >root/bin/busybox
-fi
-cd root/bin
-chmod +x busybox
-ln -s busybox mount
-ln -s busybox sh
-cd -
- 
-# Init process
- 
-cat >>root/init << EOF
-#!/bin/busybox sh
-/bin/busybox --install -s /bin
-mount -t devtmpfs  devtmpfs  /dev
-mount -t proc      proc      /proc
-mount -t sysfs     sysfs     /sys
-mount -t tmpfs     tmpfs     /tmp
-setsid cttyhack sh
-exec /bin/sh
-EOF
-chmod +x root/init
- 
 # initramfs creation
- 
-cd root
+cd image
 find . | cpio -ov --format=newc | gzip -9 >../initramfs
 cd -