diff --git a/linux/ubuntu/Dockerfile b/linux/ubuntu/Dockerfile
index a303cff..32c4ce5 100644
--- a/linux/ubuntu/Dockerfile
+++ b/linux/ubuntu/Dockerfile
@@ -97,31 +97,24 @@ ENV DOTNET_CLI_TELEMETRY_OPTOUT=1 \
     NUGET_PACKAGES=${AGENT_TOOLSDIRECTORY}/nugetpackages \
     PATH=${AGENT_TOOLSDIRECTORY}/dotnet/tools:${AGENT_TOOLSDIRECTORY}/dotnet:${PATH}
 
-# # install .NET SDK
-# RUN printf "Package: *net*\nPin: origin packages.microsoft.com\nPin-Priority: 1001\n" >/etc/apt/preferences.d/dotnet \
-#     && deps=("libc6" "libgcc1" "libgssapi-krb5-2" "libstdc++6" "zlib1g") \
-#     && while IFS='' read -r dep; do deps+=("$dep"); done < <(printf "%s\n" "${DOTNET_DEPS}" | jq -r '.[]') \
-#     && apt-get -y update &>/dev/null \
-#     && apt-get -y install --no-install-recommends \
-#         "${deps[@]}" \
-#     && curl -fsSL https://dot.net/v1/dotnet-install.sh \
-#     | bash -s -- \
-#         --install-dir "${DOTNET_ROOT}" \
-#         --no-path \
-#         --channel "${DOTNET_CHANNEL}" \
-#         --version "${DOTNET_SDK_VERSION}" \
-#     && rm -rf /etc/apt/preferences.d/dotnet \
-#     && sed "s|^PATH=|PATH=${DOTNET_ROOT}:|mg" -i /etc/environment \
-#     && apt-get clean \
-#     && rm -rf /etc/apt/sources.list.d/* \
-#     && rm -rf /var/lib/apt/lists/*
-RUN curl -LO https://dotnet.microsoft.com/download/dotnet/scripts/v1/dotnet-install.sh \
-&& cat ./dotnet-install.sh \
-&& bash ./dotnet-install.sh --install-dir /opt/hostedtoolcache/dotnet --no-path --channel STS  # net 7.0 \
-&& bash ./dotnet-install.sh --install-dir /opt/hostedtoolcache/dotnet --no-path --channel LTS  # net 6.0 \
-&& rm ./dotnet-install.sh \
-&& export DOTNET_ROOT=/opt/hostedtoolcache/dotnet \
-&& export PATH=$PATH:$DOTNET_ROOT
+# install .NET SDK
+RUN printf "Package: *net*\nPin: origin packages.microsoft.com\nPin-Priority: 1001\n" >/etc/apt/preferences.d/dotnet \
+    && deps=("libc6" "libgcc1" "libgssapi-krb5-2" "libstdc++6" "zlib1g") \
+    && while IFS='' read -r dep; do deps+=("$dep"); done < <(printf "%s\n" "${DOTNET_DEPS}" | jq -r '.[]') \
+    && apt-get -y update &>/dev/null \
+    && apt-get -y install --no-install-recommends \
+        "${deps[@]}" \
+    && curl -fsSL https://dot.net/v1/dotnet-install.sh \
+    | bash -s -- \
+        --install-dir "${DOTNET_ROOT}" \
+        --no-path \
+        --channel "${DOTNET_CHANNEL}" \
+        --version "${DOTNET_SDK_VERSION}" \
+    && rm -rf /etc/apt/preferences.d/dotnet \
+    && sed "s|^PATH=|PATH=${DOTNET_ROOT}:|mg" -i /etc/environment \
+    && apt-get clean \
+    && rm -rf /etc/apt/sources.list.d/* \
+    && rm -rf /var/lib/apt/lists/*
 
 # Install apt-fast
 RUN bash -c "$(curl -fsSL https://raw.githubusercontent.com/ilikenwf/apt-fast/master/quick-install.sh)" \