Improve examples in README

.travis.yml

@@ -1,5 +1,7 @@
 sudo: enabled
 services:
     - docker
+before_script:
+    - wget -qO- 'https://github.com/tianon/pgp-happy-eyeballs/raw/master/hack-my-builds.sh' | bash
 script:
     - docker build -t rakudo-star .

Dockerfile

@@ -25,7 +25,7 @@ RUN buildDeps=' \
     \
     && curl -fsSL ${url}.asc -o ${tmpdir}/rakudo.tar.gz.asc \
     && curl -fsSL $url -o ${tmpdir}/rakudo.tar.gz \
-    && gpg --keyserver $keyserver --recv-keys $keyfp \
+    && gpg --batch --keyserver $keyserver --recv-keys $keyfp \
     && gpg --batch --verify ${tmpdir}/rakudo.tar.gz.asc ${tmpdir}/rakudo.tar.gz \
     \
     && tar xzf ${tmpdir}/rakudo.tar.gz --strip-components=1 -C ${tmpdir}/rakudo \

README.md

@@ -30,23 +30,19 @@ you use the default version.
 
 # Usage
 
-Simply running a container with the image will launch a Perl 6 REPL:
+Running a short-term foreground process with the image will launch a Perl 6 REPL:
 
-    $ docker run -it rakudo-star
+    $ docker run --rm -it rakudo-star
     > say 'Hello, Perl!'
     Hello, Perl!
 
-You can also provide perl6 command line switches to `docker run`:
+You can also provide perl6 command line switches to a temporary container:
 
-    $ docker run -it rakudo-star perl6 -e 'say "Hello!"'
+    $ docker run --rm rakudo-star perl6 -e 'say "Hello!"'
 
-In addition, you can mount a directory from the host within a container:
+In addition, you can run a script located in the current folder:
 
-    $ docker run -it -v $HOME/my_p6_projects/:/mount_location/ rakudo-star /bin/bash
-
-Then, you can run your scripts from inside the container:
-
-    # perl6 /mount_location/my_p6_script.p6
+    $ docker run --rm -v "$(pwd):/script" rakudo-star perl6 /script/my_p6_script.p6
 
 # Contributing/Getting Help