add some test parts for alpine linux x86_64

Makefile

@@ -111,7 +111,13 @@ ifeq ($(arch), $(filter $(arch), x86_64 aarch64))
 	@cd $(out_dir) && tar xvf ../../$(alpine)
 endif
 
-#build: rust ucore biscuit $(busybox) nginx redis iperf3
+test:
+	@echo setup test DIR
+	@mkdir -p $(out_dir)
+	@cp -r testsuits_alpine $(out_dir)/
+	@mv $(out_dir)/testsuits_alpine $(out_dir)/test
+
+#build: rust ucore biscuit $(busybox) nginx redis iperf3 test
 build: rust alpine
 
 sfsimg: $(out_qcow2)

README.md

@@ -44,6 +44,7 @@ Then, build userspace programs for rCore:
 ```bash
 $ make {ucore,biscuit,rust,nginx,redis,all} arch={x86_64,aarch64,riscv32,riscv64,mipsel}
 $ make alpine arch={x86_64,aarch64} # if you want to use alpine rootfs
+$ make test arch={x86_64} # test alpine real apps, e.g. python, gcc, rust, go, lua, etc.(need rootfs with these real apps)
 $ make sfsimg arch={x86_64,aarch64,riscv32,riscv64,mipsel}
 ```
 
@@ -61,7 +62,7 @@ A rootfs is created at `build/$(arch)` and converted to `qcow2`.
 | busybox            | ✅     | ✅      | ✅     | ✅      | ✅    |
 | alpine rootfs      | ✅     | ✅      | ❌     | ❌      | ❌    |
 | iperf3             | ✅     | ❌      | ❌     | ❌      | ❌    |
-
+| test             	 | ✅     | ❌      | ❌     | ❌      | ❌    |
 
 Note: ❗ means workarounds are used so that they may not work properly. ❌ means failure in compiling or not existed on such platform.
 
@@ -158,4 +159,22 @@ $ printf
 Built within rCore
 ```
 
-Note: the long linker args can be replaced by invoking gcc instead later when we fix the problem. If you encountered `rcore-fs-fuse` panicking, consider upgrading it to latest version.
+Note: the long linker args can be replaced by invoking gcc instead later when we fix the problem. If you encountered `rcore-fs-fuse` panicking, consider upgrading it to latest version.
+
+
+### How to test real alpine apps
+#### simple test for alpine minifs with little apps
+```bash
+1. make alpine arch=x86_64
+2. make test arch=x86_64
+3. make sfsimg arch=x86_64
+4. cd $(RCORE_ROOT)/kernel; make run arch=x86_64 mode=release
+```
+
+#### test gcc/go/python2/python3/ruby/lua/java/rust
+```bash
+1. download x86_64.qcow2.realapps.xz from cloud tsinghua
+2. xz -d x86_64.qcow2.realapps.xz; mv x86_64.qcow2.realapps x86_64.qcow2
+3. mv x86_64.qcow2 $(RCORE_ROOT)/user/build
+4. cd $(RCORE_ROOT)/kernel; make run arch=x86_64 mode=release
+```