Remove dependency on obsolete buster-backports respository. (#199)
diff --git a/CHANGES.md b/CHANGES.md
index 220a273..05634dc 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -16,6 +16,9 @@
# limitations under the License.
#
-->
+# Next Release
+- Remove obsolete buster-backports repository from build.
+
# 1.24.0
- Add support for golang 1.22 (#195)
- Drop support for golang 1.19 (#197)
diff --git a/golang1.20/Dockerfile b/golang1.20/Dockerfile
index 3295f46..b11e8d2 100644
--- a/golang1.20/Dockerfile
+++ b/golang1.20/Dockerfile
@@ -18,9 +18,7 @@
# Do not fix the patch level for golang:1.20 to automatically get security fixes.
FROM golang:1.20-bullseye
-RUN echo "deb http://deb.debian.org/debian buster-backports main contrib non-free" \
- >>/etc/apt/sources.list &&\
- echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections &&\
+RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections &&\
apt-get update &&\
# Upgrade installed packages to get latest security fixes if the base image does not contain them already.
apt-get upgrade -y --no-install-recommends &&\
diff --git a/golang1.21/Dockerfile b/golang1.21/Dockerfile
index 21e258e..ff3b8e1 100644
--- a/golang1.21/Dockerfile
+++ b/golang1.21/Dockerfile
@@ -18,9 +18,7 @@
# Do not fix the patch level for golang:1.21 to automatically get security fixes.
FROM golang:1.21-bookworm
-RUN echo "deb http://deb.debian.org/debian buster-backports main contrib non-free" \
- >>/etc/apt/sources.list &&\
- echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections &&\
+RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections &&\
apt-get update &&\
# Upgrade installed packages to get latest security fixes if the base image does not contain them already.
apt-get upgrade -y --no-install-recommends &&\
diff --git a/golang1.22/Dockerfile b/golang1.22/Dockerfile
index 97ec30f..0970f9d 100644
--- a/golang1.22/Dockerfile
+++ b/golang1.22/Dockerfile
@@ -18,9 +18,7 @@
# Do not fix the patch level for golang:1.22 to automatically get security fixes.
FROM golang:1.22-bookworm
-RUN echo "deb http://deb.debian.org/debian buster-backports main contrib non-free" \
- >>/etc/apt/sources.list &&\
- echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections &&\
+RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections &&\
apt-get update &&\
# Upgrade installed packages to get latest security fixes if the base image does not contain them already.
apt-get upgrade -y --no-install-recommends &&\
