Clarification for an sbuild patch in a Docker README

contrib/clemux/docker/README.rst

@@ -21,6 +21,13 @@ already setup to use apt-cacher.
 Otherwise, you'll need to edit the ``sources.list`` files to use the
 mirror of your choosing.
 
+Copy a patch for sbuild from
+``contrib/debian/support-for-schroot-sessions.patch`` to enable using an
+schroot session in sbuild. When in the root of the Debile repository,
+run:
+
+$ cp contrib/debian/support-for-schroot-sessions.patch contrib/clemux/docker/debile-slave/
+
 Docker runs as root, and the ``docker`` CLI program will need access
 to docker's unix socket. If you don't want to run ``docker`` as root,
 you can add your user to the group ``docker``:

contrib/clemux/docker/debile-slave/Dockerfile

@@ -23,7 +23,7 @@ RUN apt-get update && apt-get install -y python python-dput dput-ng python-fireh
 RUN apt-get build-dep --assume-yes sbuild
 RUN apt-get source sbuild
 COPY support-for-schroot-sessions.patch /tmp/
-RUN cd sbuild-* && cp ../support-for-schroot-sessions.patch . && \
+RUN cd sbuild-* && \
     patch -p1 < ../support-for-schroot-sessions.patch && \
     dpkg-buildpackage -us -uc -nc
 RUN (dpkg --install *sbuild*.deb || true)