update README

README.md

@@ -61,6 +61,18 @@ system install, for all users, as `root`:
 each user can have its own configuration in `~/.config/runon/runon.conf`.
 
 
+## some convenient links
+
+you can create soft links to `runos` to simplify calls:
+
+    cd /usr/local/bin
+    ln -s runon centos7
+
+now calling `centos7 ...` is equivalent to call `runos centos7 ...`:
+
+    centos7 xclock
+
+
 Usage
 -----
 

runon

@@ -125,8 +125,12 @@ def create_container(client, image, conf, command, verbose):
 
 
 def run_container(client, container):
+    try:
         dockerpty.start(client.api, container.id)
         container.reload()  # to update attrs fields
+    except docker.errors.APIError as e:
+        print('ERROR: {}'.format(e))
+        sys.exit(1)
     ret = container.attrs['State']['ExitCode']
     return ret
 

runon.conf

@@ -20,7 +20,7 @@ dockerfile =
     RUN echo "Defaults lecture = never" >> /etc/sudoers
     RUN echo "ALL ALL=(ALL) ALL" >> /etc/sudoers
 pkginstall = RUN yum install {} -y
-packages = ksh csh xterm xorg-x11-apps xkeyboard-config git
+packages = ksh csh xterm xorg-x11-apps xkeyboard-config git glibc-devel gdk-pixbuf2 gtk2 gtk3 alsa-lib
 
 [centos8]
 dockerfile =
@@ -31,7 +31,7 @@ dockerfile =
     RUN echo "Defaults lecture = never" >> /etc/sudoers
     RUN echo "ALL ALL=(ALL) ALL" >> /etc/sudoers
 pkginstall = RUN yum install {} -y
-packages = ksh csh xterm xorg-x11-apps xkeyboard-config git
+packages = ksh csh xterm xorg-x11-apps xkeyboard-config git glibc-devel
 
 [debian9]
 dockerfile =