Update readme, fix misspelling and run shellcheck on build script

Signed-off-by: Tom Boettger <[email protected]>

consul/GNUmakefile.patch

@@ -2,4 +2,4 @@
 < 	CGO_ENABLED=0 GOOS=linux GOARCH=$(GOARCH) go build -o ./pkg/bin/linux_$(GOARCH) -ldflags "$(GOLDFLAGS)" -tags "$(GOTAGS)"
 ---
 > 	GOLDFLAGS="$(GOLDFLAGS) -linkmode external -extldflags '-static-pie'"
-> 	CGO_ENABLED=0 GOOS=linux GOARCH=$(GOARCH) go build -o ./pkg/bin/linux_$(GOARCH) -buildmode=pie -ldflags "$(GOLDFLAGS)" -tags "$(GOTAGS)"
+> 	CGO_ENABLED=0 GOOS=linux GOARCH=$(GOARCH) go build -o ./pkg/bin -buildmode=pie -ldflags "$(GOLDFLAGS)" -tags "$(GOTAGS)"

consul/README.md

@@ -7,7 +7,6 @@ Build the consul server as a static PIE ELF running on Linux.
 Make sure the following packages are installed:
 * go >= 1.17
 * unzip
-* apply
 * patch
 
 ## Build
@@ -18,3 +17,16 @@ If you want to rebuild it, run:
 ```
 $ ./build.sh
 ```
+
+## Run
+
+You can run the executable natively on Linux:
+
+```
+$ ./consul-1.13.3/pkg/bin/consul version
+```
+
+Or with [run-elfloader](https://github.com/unikraft/run-app-elfloader) on Unikraft:
+```
+$ ./run_elfloader ../static-pie-apps/consul/consul-1.13.3/pkg/bin/consul [args]
+```

consul/build.sh

@@ -11,7 +11,7 @@ echo "Unpacking consul source code..."
 unzip v1.13.3.zip
 
 echo "Building consul... "
-cd consul-1.13.3
-patch GNUMakefile ../GNUMakefile.patch
-make dev
+cd consul-1.13.3 || exit
+patch GNUmakefile ../GNUmakefile.patch
+make linux
 echo ""