docker: small doc improvements

Author: cirosantilli

README.adoc

@@ -698,7 +698,7 @@ For example, to do a <<qemu-buildroot-setup>> inside Docker, run:
 sudo apt-get install docker
 ./run-docker create && \
 ./run-docker sh -- ./build --download-dependencies qemu-buildroot
-./run-docker sh
+./run-docker
 ....
 
 You are now left inside a shell in the Docker! From there, just run as usual:
@@ -726,7 +726,7 @@ and the image shows under:
 ....
 docker images
 ....
-* `./run-docker sh`: open a shell on the container.
+* `./run-docker`: open a shell on the container.
 +
 If it has not been started previously, start it. This can also be done explicitly with:
 +
@@ -753,7 +753,7 @@ To actually delete the Docker build, run on host:
 To use <<gdb>> from inside Docker, you need a second shell inside the container. You can either do that from another shell with:
 
 ....
-./run-docker sh
+./run-docker
 ....
 
 or even better, by starting a <<tmux>> session inside the container. We install `tmux` by default in the container.

build-docker

@@ -38,13 +38,12 @@ See also: https://github.com/cirosantilli/linux-kernel-module-cheatTODO#ubuntu-g
             'docker',
             'create',
             '--name', container_name,
-            '--net',
-            'host',
-            '-i',
+            '--network', 'host',
+            '--interactive',
             '--privileged',
-            '-t',
-            '-w', target_dir,
-            '-v', '{}:{}'.format(kwargs['root_dir'], target_dir),
+            '--tty',
+            '--workdir', target_dir,
+            '--volume', '{}:{}'.format(kwargs['root_dir'], target_dir),
             'ubuntu:20.04',
             'bash',
         ])