5 files changed, 78 insertions, 11 deletions
diff --git a/tools/images/ubuntu1604/10_core.sh b/tools/images/ubuntu1604/10_core.sh
index 46dda6bb1..cd518d6ac 100755
--- a/tools/images/ubuntu1604/10_core.sh
+++ b/tools/images/ubuntu1604/10_core.sh
@@ -17,7 +17,20 @@
 set -xeo pipefail
 
 # Install all essential build tools.
-apt-get update && apt-get -y install make git-core build-essential linux-headers-$(uname -r) pkg-config
+while true; do
+  if (apt-get update && apt-get install -y \
+      make \
+      git-core \
+      build-essential \
+      linux-headers-$(uname -r) \
+      pkg-config); then
+    break
+  fi
+  result=$?
+  if [[ $result -ne 100 ]]; then
+    exit $result
+  fi
+done
 
 # Install a recent go toolchain.
 if ! [[ -d /usr/local/go ]]; then
diff --git a/tools/images/ubuntu1604/20_bazel.sh b/tools/images/ubuntu1604/20_bazel.sh
index b33e1656c..bb7afa676 100755
--- a/tools/images/ubuntu1604/20_bazel.sh
+++ b/tools/images/ubuntu1604/20_bazel.sh
@@ -19,7 +19,17 @@ set -xeo pipefail
 declare -r BAZEL_VERSION=2.0.0
 
 # Install bazel dependencies.
-apt-get update && apt-get install -y openjdk-8-jdk-headless unzip
+while true; do
+  if (apt-get update && apt-get install -y \
+      openjdk-8-jdk-headless \
+      unzip); then
+    break
+  fi
+  result=$?
+  if [[ $result -ne 100 ]]; then
+    exit $result
+  fi
+done
 
 # Use the release installer.
 curl -L -o bazel-${BAZEL_VERSION}-installer-linux-x86_64.sh https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VERSION}/bazel-${BAZEL_VERSION}-installer-linux-x86_64.sh
diff --git a/tools/images/ubuntu1604/25_docker.sh b/tools/images/ubuntu1604/25_docker.sh
index 1d3defcd3..11eea2d72 100755
--- a/tools/images/ubuntu1604/25_docker.sh
+++ b/tools/images/ubuntu1604/25_docker.sh
@@ -15,12 +15,20 @@
 # limitations under the License.
 
 # Add dependencies.
-apt-get update && apt-get -y install \
-    apt-transport-https \
-    ca-certificates \
-    curl \
-    gnupg-agent \
-    software-properties-common
+while true; do
+  if (apt-get update && apt-get install -y \
+      apt-transport-https \
+      ca-certificates \
+      curl \
+      gnupg-agent \
+      software-properties-common); then
+    break
+  fi
+  result=$?
+  if [[ $result -ne 100 ]]; then
+    exit $result
+  fi
+done
 
 # Install the key.
 curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
@@ -32,4 +40,15 @@ add-apt-repository \
    stable"
 
 # Install docker.
-apt-get update && apt-get install -y docker-ce docker-ce-cli containerd.io
+while true; do
+  if (apt-get update && apt-get install -y \
+      docker-ce \
+      docker-ce-cli \
+      containerd.io); then
+    break
+  fi
+  result=$?
+  if [[ $result -ne 100 ]]; then
+    exit $result
+  fi
+done
diff --git a/tools/images/ubuntu1604/30_containerd.sh b/tools/images/ubuntu1604/30_containerd.sh
index a7472bd1c..fb3699c12 100755
--- a/tools/images/ubuntu1604/30_containerd.sh
+++ b/tools/images/ubuntu1604/30_containerd.sh
@@ -34,7 +34,17 @@ install_helper() {
 }
 
 # Install dependencies for the crictl tests.
-apt-get install -y btrfs-tools libseccomp-dev
+while true; do
+  if (apt-get update && apt-get install -y \
+      btrfs-tools \
+      libseccomp-dev); then
+    break
+  fi
+  result=$?
+  if [[ $result -ne 100 ]]; then
+    exit $result
+  fi
+done
 
 # Install containerd & cri-tools.
 GOPATH=$(mktemp -d --tmpdir gopathXXXXX)
diff --git a/tools/images/ubuntu1604/40_kokoro.sh b/tools/images/ubuntu1604/40_kokoro.sh
index 5f2dfc858..06a1e6c48 100755
--- a/tools/images/ubuntu1604/40_kokoro.sh
+++ b/tools/images/ubuntu1604/40_kokoro.sh
@@ -23,7 +23,22 @@ declare -r ssh_public_keys=(
 )
 
 # Install dependencies.
-apt-get update && apt-get install -y rsync coreutils python-psutil qemu-kvm python-pip python3-pip zip
+while true; do
+  if (apt-get update && apt-get install -y \
+      rsync \
+      coreutils \
+      python-psutil \
+      qemu-kvm \
+      python-pip \
+      python3-pip \
+      zip); then
+    break
+  fi
+  result=$?
+  if [[ $result -ne 100 ]]; then
+    exit $result
+  fi
+done
 
 # junitparser is used to merge junit xml files.
 pip install junitparser