diff --git a/scripts/build/Dockerfile.alpine b/scripts/build/Dockerfile.alpine
index c35104c64..aab6184d7 100644
--- a/scripts/build/Dockerfile.alpine
+++ b/scripts/build/Dockerfile.alpine
@@ -4,6 +4,7 @@ ARG ENV1=FOOBAR
 
 RUN apk update && apk add \
 	$CC \
+	bash \
 	build-base \
 	ccache \
 	coreutils \
@@ -15,7 +16,8 @@ RUN apk update && apk add \
 	pkgconfig \
 	protobuf-c-dev \
 	protobuf-dev \
-	python
+	python \
+	sudo
 
 COPY . /criu
 WORKDIR /criu
@@ -36,5 +38,8 @@ RUN apk add \
 	e2fsprogs \
 	asciidoc xmlto
 
+# The rpc test cases are running as user #1000, let's add the user
+RUN adduser -u 1000 -D test
+
 RUN pip install protobuf ipaddress junit_xml
 RUN make -C test/zdtm
diff --git a/scripts/build/Dockerfile.centos b/scripts/build/Dockerfile.centos
index 5f8470773..0160b7594 100644
--- a/scripts/build/Dockerfile.centos
+++ b/scripts/build/Dockerfile.centos
@@ -27,6 +27,7 @@ RUN yum install -y \
 	python2-junit_xml \
 	python-yaml \
 	python-six \
+	sudo \
 	tar \
 	which \
 	e2fsprogs \
diff --git a/test/others/rpc/Makefile b/test/others/rpc/Makefile
index 5b383cfb8..2b15873fd 100644
--- a/test/others/rpc/Makefile
+++ b/test/others/rpc/Makefile
@@ -9,6 +9,8 @@ run: all
 	chmod a+rwx build
 	@# need to start the criu daemon here to access the pidfile
 	sudo -g '#1000' -u '#1000' ./criu service -v4 -W build -o service.log --address criu_service.socket -d --pidfile pidfile
+	# Give the criu daemon some time to start up
+	sleep 0.5
 	chmod a+rw build/pidfile
 	sudo -g '#1000' -u '#1000' ./run.sh
 	sudo -g '#1000' -u '#1000' ./version.py