Add CRIU patch to fix checkpoint test

For the newly integrated feature to use CRIU configuration files the
test is broken without an additional CRIU patch.

The test changes CRIU's log file. Changing the log file is unfortunately
the only thing which is in broken in CRIU 3.11. But it is the easiest
option for testing. With CRIU 3.12 this will be fixed. All other CRIU
options can be changed with a CRIU configuration file.

With this change the CRIU 3.11 feature can be merged into runc with a
test and for the user it should just work, if they are not trying to
change CRIU's log file.

Signed-off-by: Adrian Reber <[email protected]>

Dockerfile

@@ -45,10 +45,14 @@ RUN cd /tmp \
     && rm -rf /tmp/bats
 
 # install criu
+# For CRIU 3.11 one patch is needed for the test 'checkpoint and restore with container specific CRIU config'
+# This should be no longer necessary with CRIU 3.12
+# See https://github.com/opencontainers/runc/pull/1933
 ENV CRIU_VERSION v3.11
 RUN mkdir -p /usr/src/criu \
     && curl -sSL https://github.com/checkpoint-restore/criu/archive/${CRIU_VERSION}.tar.gz | tar -v -C /usr/src/criu/ -xz --strip-components=1 \
     && cd /usr/src/criu \
+    && curl https://github.com/checkpoint-restore/criu/commit/bb0b2f2635d71e549851b7c626a1464e42a3b5c7.patch | patch -p1 \
     && make install-criu \
     && rm -rf /usr/src/criu