diff --git a/parsl/tests/ci_k8s/Dockerfile b/parsl/tests/ci_k8s/Dockerfile
index 7cba084be2..0e9b3dff64 100644
--- a/parsl/tests/ci_k8s/Dockerfile
+++ b/parsl/tests/ci_k8s/Dockerfile
@@ -7,16 +7,16 @@ RUN apt-get update && apt-get upgrade -y
 
 # gcc and similar are needed for building taskvine
 
-RUN apt-get update && apt-get install -y git procps python3 python3-dev python3-venv gcc build-essential make pkg-config mpich
+RUN apt-get update && apt-get install -y git procps python3 python3-dev python3-venv gcc build-essential make pkg-config mpich swig
 
 RUN python3 -m venv /venv
 
 ADD . /parsl
 WORKDIR /
-RUN git clone https://github.com/cooperative-computing-lab/cctools --shallow -b release/7.8.0
+RUN git clone https://github.com/cooperative-computing-lab/cctools --depth 1 -b release/7.8.0
 
 WORKDIR /cctools
-RUN . /venv/bin/activate && apt install -y swig && ./configure --prefix=/ && make && make install
+RUN . /venv/bin/activate && ./configure --prefix=/ && make && make install
 
 WORKDIR /parsl
 RUN . /venv/bin/activate && pip3 install '.[kubernetes]' cloudpickle -r test-requirements.txt