diff --git a/bitnami/contour/1.20/debian-11/Dockerfile b/bitnami/contour/1.20/debian-11/Dockerfile
index f6a491124e4b..330c2917bb86 100644
--- a/bitnami/contour/1.20/debian-11/Dockerfile
+++ b/bitnami/contour/1.20/debian-11/Dockerfile
@@ -4,7 +4,7 @@ ARG TARGETARCH
 
 LABEL org.opencontainers.image.authors="https://bitnami.com/contact" \
       org.opencontainers.image.description="Application packaged by Bitnami" \
-      org.opencontainers.image.ref.name="1.20.2-debian-11-r35" \
+      org.opencontainers.image.ref.name="1.20.2-debian-11-r36" \
       org.opencontainers.image.source="https://github.com/bitnami/containers/tree/main/bitnami/contour" \
       org.opencontainers.image.title="contour" \
       org.opencontainers.image.vendor="VMware, Inc." \
@@ -28,7 +28,7 @@ RUN mkdir -p /tmp/bitnami/pkg/cache/ && cd /tmp/bitnami/pkg/cache/ && \
     tar -zxf contour-1.20.2-3-linux-${OS_ARCH}-debian-11.tar.gz -C /opt/bitnami --strip-components=2 --no-same-owner --wildcards '*/files' && \
     rm -rf contour-1.20.2-3-linux-${OS_ARCH}-debian-11.tar.gz contour-1.20.2-3-linux-${OS_ARCH}-debian-11.tar.gz.sha256
 RUN apt-get update && apt-get upgrade -y && \
-    rm -r /var/lib/apt/lists /var/cache/apt/archives
+    apt-get clean && rm -rf /var/lib/apt/lists /var/cache/apt/archives
 RUN chmod g+rwX /opt/bitnami
 RUN ln -s /opt/bitnami/contour/bin/contour /bin/contour
 
diff --git a/bitnami/contour/1.20/debian-11/prebuildfs/usr/sbin/install_packages b/bitnami/contour/1.20/debian-11/prebuildfs/usr/sbin/install_packages
index c9577647443b..77857a1a57f2 100755
--- a/bitnami/contour/1.20/debian-11/prebuildfs/usr/sbin/install_packages
+++ b/bitnami/contour/1.20/debian-11/prebuildfs/usr/sbin/install_packages
@@ -1,9 +1,10 @@
 #!/bin/sh
-set -e
-set -u
-export DEBIAN_FRONTEND=noninteractive
+set -eu
+
 n=0
 max=2
+export DEBIAN_FRONTEND=noninteractive
+
 until [ $n -gt $max ]; do
     set +e
     (
@@ -21,4 +22,4 @@ until [ $n -gt $max ]; do
     echo "apt failed, retrying"
     n=$(($n + 1))
 done
-rm -r /var/lib/apt/lists /var/cache/apt/archives
+apt-get clean && rm -rf /var/lib/apt/lists /var/cache/apt/archives
diff --git a/bitnami/contour/README.md b/bitnami/contour/README.md
index f78b9f62e67d..d0cfdd4a77ac 100644
--- a/bitnami/contour/README.md
+++ b/bitnami/contour/README.md
@@ -41,7 +41,7 @@ Learn more about the Bitnami tagging policy and the difference between rolling t
 
 * [`1.22`, `1.22-debian-11`, `1.22.1`, `1.22.1-debian-11-r5`, `latest` (1.22/debian-11/Dockerfile)](https://github.com/bitnami/containers/blob/main/bitnami/contour/1.22/debian-11/Dockerfile)
 * [`1.21`, `1.21-debian-11`, `1.21.1`, `1.21.1-debian-11-r33` (1.21/debian-11/Dockerfile)](https://github.com/bitnami/containers/blob/main/bitnami/contour/1.21/debian-11/Dockerfile)
-* [`1.20`, `1.20-debian-11`, `1.20.2`, `1.20.2-debian-11-r35` (1.20/debian-11/Dockerfile)](https://github.com/bitnami/containers/blob/main/bitnami/contour/1.20/debian-11/Dockerfile)
+* [`1.20`, `1.20-debian-11`, `1.20.2`, `1.20.2-debian-11-r36` (1.20/debian-11/Dockerfile)](https://github.com/bitnami/containers/blob/main/bitnami/contour/1.20/debian-11/Dockerfile)
 
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