Use prebuilt image

.devcontainer/Dockerfile

@@ -1,45 +1,3 @@
-FROM mcr.microsoft.com/vscode/devcontainers/base:0-buster
+FROM fdev321123/runner-devcontainer:latest
 
-# [Option] Install zsh
-ARG INSTALL_ZSH="false"
-# [Option] Upgrade OS packages to their latest versions
-ARG UPGRADE_PACKAGES="false"
-# [Option] Enable non-root Docker access in container
-ARG ENABLE_NONROOT_DOCKER="false"
-# [Option] Use the OSS Moby Engine instead of the licensed Docker Engine
-ARG USE_MOBY="true"
-# [Option] Engine/CLI Version
-ARG DOCKER_VERSION="latest"
-
-# Enable new "BUILDKIT" mode for Docker CLI
-ENV DOCKER_BUILDKIT=1
-
-# https://github.com/microsoft/vscode-dev-containers/issues/1617
-ENV IGNORE_NOTICE=true
-
-ARG USERNAME=automatic
-ARG USER_UID=1000
-ARG USER_GID=$USER_UID
-COPY library-scripts/*.sh /tmp/library-scripts/
-RUN apt-get update \
-    && /bin/bash /tmp/library-scripts/common-debian.sh "${INSTALL_ZSH}" "${USERNAME}" "${USER_UID}" "${USER_GID}" "${UPGRADE_PACKAGES}" "true" "true" \
-    # Use Docker script from script library to set things up
-    && /bin/bash /tmp/library-scripts/docker-in-docker-debian.sh "${ENABLE_NONROOT_DOCKER}" "${USERNAME}" "${USE_MOBY}" "${DOCKER_VERSION}" \
-    # Clean up
-    && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* /tmp/library-scripts/
-
-VOLUME [ "/var/lib/docker" ]
-
-# Setting the ENTRYPOINT to docker-init.sh will start up the Docker Engine 
-# inside the container "overrideCommand": false is set in devcontainer.json. 
-# The script will also execute CMD if you need to alter startup behaviors.
-ENTRYPOINT [ "/usr/local/share/docker-init.sh" ]
-CMD [ "sleep", "infinity" ]
-
-RUN apt update && apt-get install -y --allow-downgrades dotnet-sdk-6.0=6.0.300-1
-
-COPY init.sh /var/init.sh
-
-# [Optional] Uncomment this section to install additional OS packages.
-# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
-#     && apt-get -y install --no-install-recommends <your-package-list-here>
+# Following the pattern of Dockerfile and base.Dockerfile established here https://github.com/microsoft/vscode-dev-containers/tree/main/containers/codespaces-linux/.devcontainer

.devcontainer/base.Dockerfile

@@ -0,0 +1,45 @@
+FROM mcr.microsoft.com/vscode/devcontainers/base:0-buster
+
+# [Option] Install zsh
+ARG INSTALL_ZSH="false"
+# [Option] Upgrade OS packages to their latest versions
+ARG UPGRADE_PACKAGES="false"
+# [Option] Enable non-root Docker access in container
+ARG ENABLE_NONROOT_DOCKER="false"
+# [Option] Use the OSS Moby Engine instead of the licensed Docker Engine
+ARG USE_MOBY="true"
+# [Option] Engine/CLI Version
+ARG DOCKER_VERSION="latest"
+
+# Enable new "BUILDKIT" mode for Docker CLI
+ENV DOCKER_BUILDKIT=1
+
+# https://github.com/microsoft/vscode-dev-containers/issues/1617
+ENV IGNORE_NOTICE=true
+
+ARG USERNAME=automatic
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+COPY library-scripts/*.sh /tmp/library-scripts/
+RUN apt-get update \
+    && /bin/bash /tmp/library-scripts/common-debian.sh "${INSTALL_ZSH}" "${USERNAME}" "${USER_UID}" "${USER_GID}" "${UPGRADE_PACKAGES}" "true" "true" \
+    # Use Docker script from script library to set things up
+    && /bin/bash /tmp/library-scripts/docker-in-docker-debian.sh "${ENABLE_NONROOT_DOCKER}" "${USERNAME}" "${USE_MOBY}" "${DOCKER_VERSION}" \
+    # Clean up
+    && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* /tmp/library-scripts/
+
+VOLUME [ "/var/lib/docker" ]
+
+# Setting the ENTRYPOINT to docker-init.sh will start up the Docker Engine 
+# inside the container "overrideCommand": false is set in devcontainer.json. 
+# The script will also execute CMD if you need to alter startup behaviors.
+ENTRYPOINT [ "/usr/local/share/docker-init.sh" ]
+CMD [ "sleep", "infinity" ]
+
+RUN apt update && apt-get install -y --allow-downgrades dotnet-sdk-6.0=6.0.300-1
+RUN apt-get install build-essential -y
+COPY init.sh /var/init.sh
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>