diff --git a/ci/docker/ubuntu-22.04-csharp.dockerfile b/ci/docker/ubuntu-22.04-csharp.dockerfile
deleted file mode 100644
index 4d77ba060b87..000000000000
--- a/ci/docker/ubuntu-22.04-csharp.dockerfile
+++ /dev/null
@@ -1,28 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-
-ARG arch=amd64
-ARG dotnet=8.0
-ARG platform=jammy
-FROM mcr.microsoft.com/dotnet/sdk:${dotnet}-${platform}-${arch}
-
-RUN apt-get update -y -q && \
-    apt-get install -y python3 python3-pip && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
-
-RUN dotnet tool install --tool-path /usr/local/bin sourcelink