Enable Codespaces.

.devcontainer/Dockerfile

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+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.145.0/containers/codespaces-linux/.devcontainer/base.Dockerfile
+
+FROM mcr.microsoft.com/vscode/devcontainers/universal:0-linux
+
+USER root
+
+# [Option] Install Docker CLI
+ARG INSTALL_DOCKER="false"
+COPY library-scripts/docker-debian.sh /tmp/library-scripts/
+RUN if [ "${INSTALL_DOCKER}" = "true" ]; then \
+        rm -f /usr/local/share/docker-init.sh \
+        && bash /tmp/library-scripts/docker-debian.sh "true" "/var/run/docker-host.sock" "/var/run/docker.sock" "codespace"; \
+    fi \
+    && rm -rf /var/lib/apt/lists/* /tmp/library-scripts/
+
+USER codespace
+
+# ** [Optional] Uncomment this section to install additional packages. **
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+

.devcontainer/devcontainer.json

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+{
+	"name": "GitHub Codespaces (Default)",
+	"build": {
+		"dockerfile": "Dockerfile",
+		"args": {
+			"INSTALL_DOCKER": "true"
+		}
+	},
+	"settings": {
+		"terminal.integrated.shell.linux": "/bin/bash",
+		"go.useGoProxyToCheckForToolUpdates": false,
+		"go.useLanguageServer": true,
+		"go.gopath": "/go",
+		"go.goroot": "/usr/local/go",
+		"go.toolsGopath": "/go/bin",
+		"python.pythonPath": "/opt/python/latest/bin/python",
+		"python.linting.enabled": true,
+		"python.linting.pylintEnabled": true,
+		"python.formatting.autopep8Path": "/usr/local/py-utils/bin/autopep8",
+		"python.formatting.blackPath": "/usr/local/py-utils/bin/black",
+		"python.formatting.yapfPath": "/usr/local/py-utils/bin/yapf",
+		"python.linting.banditPath": "/usr/local/py-utils/bin/bandit",
+		"python.linting.flake8Path": "/usr/local/py-utils/bin/flake8",
+		"python.linting.mypyPath": "/usr/local/py-utils/bin/mypy",
+		"python.linting.pycodestylePath": "/usr/local/py-utils/bin/pycodestyle",
+		"python.linting.pydocstylePath": "/usr/local/py-utils/bin/pydocstyle",
+		"python.linting.pylintPath": "/usr/local/py-utils/bin/pylint",
+		"lldb.executable": "/usr/bin/lldb",
+		"files.watcherExclude": {
+			"**/target/**": true
+		}
+	},
+	"remoteUser": "codespace",
+	"overrideCommand": false,
+	"workspaceMount": "source=${localWorkspaceFolder},target=/home/codespace/workspace,type=bind,consistency=cached",
+	"workspaceFolder": "/home/codespace/workspace",
+	"mounts": [ "source=/var/run/docker.sock,target=/var/run/docker-host.sock,type=bind" ],
+	"runArgs": [ "--cap-add=SYS_PTRACE", "--security-opt", "seccomp=unconfined" ],
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"GitHub.vscode-pull-request-github",
+		"MS-vsliveshare.vsliveshare",
+		"VisualStudioExptTeam.vscodeintellicode"
+	]
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "uname -a"
+}

.devcontainer/library-scripts/docker-debian.sh

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+#!/usr/bin/env bash
+#-------------------------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
+#-------------------------------------------------------------------------------------------------------------
+#
+# Docs: https://github.com/microsoft/vscode-dev-containers/blob/master/script-library/docs/docker.md
+#
+# Syntax: ./docker-debian.sh [enable non-root docker socket access flag] [source socket] [target socket] [non-root user]
+
+ENABLE_NONROOT_DOCKER=${1:-"true"}
+SOURCE_SOCKET=${2:-"/var/run/docker-host.sock"}
+TARGET_SOCKET=${3:-"/var/run/docker.sock"}
+USERNAME=${4:-"automatic"}
+
+set -e
+
+if [ "$(id -u)" -ne 0 ]; then
+    echo -e 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
+    exit 1
+fi
+
+# Determine the appropriate non-root user
+if [ "${USERNAME}" = "auto" ] || [ "${USERNAME}" = "automatic" ]; then
+    USERNAME=""
+    POSSIBLE_USERS=("vscode" "node" "codespace" "$(awk -v val=1000 -F ":" '$3==val{print $1}' /etc/passwd)")
+    for CURRENT_USER in ${POSSIBLE_USERS[@]}; do
+        if id -u ${CURRENT_USER} > /dev/null 2>&1; then
+            USERNAME=${CURRENT_USER}
+            break
+        fi
+    done
+    if [ "${USERNAME}" = "" ]; then
+        USERNAME=root
+    fi
+elif [ "${USERNAME}" = "none" ] || ! id -u ${USERNAME} > /dev/null 2>&1; then
+    USERNAME=root
+fi
+
+# Function to run apt-get if needed
+apt-get-update-if-needed()
+{
+    if [ ! -d "/var/lib/apt/lists" ] || [ "$(ls /var/lib/apt/lists/ | wc -l)" = "0" ]; then
+        echo "Running apt-get update..."
+        apt-get update
+    else
+        echo "Skipping apt-get update."
+    fi
+}
+
+# Ensure apt is in non-interactive to avoid prompts
+export DEBIAN_FRONTEND=noninteractive
+
+# Install apt-transport-https, curl, lsb-release, gpg if missing
+if ! dpkg -s apt-transport-https curl ca-certificates lsb-release > /dev/null 2>&1 || ! type gpg > /dev/null 2>&1; then
+    apt-get-update-if-needed
+    apt-get -y install --no-install-recommends apt-transport-https curl ca-certificates lsb-release gnupg2 
+fi
+
+# Install Docker CLI if not already installed
+if type docker > /dev/null 2>&1; then
+    echo "Docker CLI already installed."
+else
+    curl -fsSL https://download.docker.com/linux/$(lsb_release -is | tr '[:upper:]' '[:lower:]')/gpg | (OUT=$(apt-key add - 2>&1) || echo $OUT)
+    echo "deb [arch=amd64] https://download.docker.com/linux/$(lsb_release -is | tr '[:upper:]' '[:lower:]') $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list
+    apt-get update
+    apt-get -y install --no-install-recommends docker-ce-cli
+fi
+
+# Install Docker Compose if not already installed 
+if type docker-compose > /dev/null 2>&1; then
+    echo "Docker Compose already installed."
+else
+
+    LATEST_COMPOSE_VERSION=$(curl -sSL "https://api.github.com/repos/docker/compose/releases/latest" | grep -o -P '(?<="tag_name": ").+(?=")')
+    curl -sSL "https://github.com/docker/compose/releases/download/${LATEST_COMPOSE_VERSION}/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
+    chmod +x /usr/local/bin/docker-compose
+fi
+
+# If init file already exists, exit
+if [ -f "/usr/local/share/docker-init.sh" ]; then
+    exit 0
+fi
+
+# By default, make the source and target sockets the same
+if [ "${SOURCE_SOCKET}" != "${TARGET_SOCKET}" ]; then
+    touch "${SOURCE_SOCKET}"
+    ln -s "${SOURCE_SOCKET}" "${TARGET_SOCKET}"
+fi
+
+# Add a stub if not adding non-root user access, user is root
+if [ "${ENABLE_NONROOT_DOCKER}" = "false" ] || [ "${USERNAME}" = "root" ]; then
+    echo '/usr/bin/env bash -c "\$@"' > /usr/local/share/docker-init.sh
+    chmod +x /usr/local/share/docker-init.sh
+    exit 0
+fi
+
+# If enabling non-root access and specified user is found, setup socat and add script
+chown -h "${USERNAME}":root "${TARGET_SOCKET}"        
+if ! dpkg -s socat > /dev/null 2>&1; then
+    apt-get-update-if-needed
+    apt-get -y install socat
+fi
+tee /usr/local/share/docker-init.sh > /dev/null \
+<< EOF 
+#!/usr/bin/env bash
+#-------------------------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
+#-------------------------------------------------------------------------------------------------------------
+
+set -e
+
+SOCAT_PATH_BASE=/tmp/vscr-dind-socat
+SOCAT_LOG=\${SOCAT_PATH_BASE}.log
+SOCAT_PID=\${SOCAT_PATH_BASE}.pid
+
+# Wrapper function to only use sudo if not already root
+sudoIf()
+{
+    if [ "\$(id -u)" -ne 0 ]; then
+        sudo "\$@"
+    else
+        "\$@"
+    fi
+}
+
+# Log messages
+log()
+{
+    echo -e "[\$(date)] \$@" | sudoIf tee -a \${SOCAT_LOG} > /dev/null
+}
+
+echo -e "\n** \$(date) **" | sudoIf tee -a \${SOCAT_LOG} > /dev/null
+log "Ensuring ${USERNAME} has access to ${SOURCE_SOCKET} via ${TARGET_SOCKET}"
+
+# If enabled, try to add a docker group with the right GID. If the group is root, 
+# fall back on using socat to forward the docker socket to another unix socket so 
+# that we can set permissions on it without affecting the host.
+if [ "${ENABLE_NONROOT_DOCKER}" = "true" ] && [ "${SOURCE_SOCKET}" != "${TARGET_SOCKET}" ] && [ "${USERNAME}" != "root" ] && [ "${USERNAME}" != "0" ]; then
+    SOCKET_GID=\$(stat -c '%g' ${SOURCE_SOCKET})
+    if [ "\${SOCKET_GID}" != "0" ]; then
+        log "Adding user to group with GID \${SOCKET_GID}."
+        if [ "\$(cat /etc/group | grep :\${SOCKET_GID}:)" = "" ]; then
+            sudoIf groupadd --gid \${SOCKET_GID} docker-host
+        fi
+        # Add user to group if not already in it
+        if [ "\$(id ${USERNAME} | grep -E 'groups=.+\${SOCKET_GID}\(')" = "" ]; then
+            sudoIf usermod -aG \${SOCKET_GID} ${USERNAME}
+        fi
+    else
+        # Enable proxy if not already running
+        if [ ! -f "\${SOCAT_PID}" ] || ! ps -p \$(cat \${SOCAT_PID}) > /dev/null; then
+            log "Enabling socket proxy."
+            log "Proxying ${SOURCE_SOCKET} to ${TARGET_SOCKET} for vscode"
+            sudoIf rm -rf ${TARGET_SOCKET}
+            (sudoIf socat UNIX-LISTEN:${TARGET_SOCKET},fork,mode=660,user=${USERNAME} UNIX-CONNECT:${SOURCE_SOCKET} 2>&1 | sudoIf tee -a \${SOCAT_LOG} > /dev/null & echo "\$!" | sudoIf tee \${SOCAT_PID} > /dev/null)
+        else
+            log "Socket proxy already running."
+        fi
+    fi
+    log "Success"
+fi
+
+# Execute whatever commands were passed in (if any). This allows us 
+# to set this script to ENTRYPOINT while still executing the default CMD.
+set +e
+exec "\$@"
+EOF
+chmod +x /usr/local/share/docker-init.sh
+chown ${USERNAME}:root /usr/local/share/docker-init.sh
+echo "Done!"

.devcontainer/library-scripts/git-lfs-debian.sh

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+#!/usr/bin/env bash
+#-------------------------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
+#-------------------------------------------------------------------------------------------------------------
+#
+# Docs: https://github.com/microsoft/vscode-dev-containers/blob/master/script-library/docs/git-lfs.md
+#
+# Syntax: ./git-lfs-debian.sh
+
+set -e
+
+if [ "$(id -u)" -ne 0 ]; then
+    echo -e 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
+    exit 1
+fi
+
+export DEBIAN_FRONTEND=noninteractive
+
+# Install git and curl if missing
+if ! dpkg -s git curl ca-certificates > /dev/null 2>&1; then
+    if [ ! -d "/var/lib/apt/lists" ] || [ "$(ls /var/lib/apt/lists/ | wc -l)" = "0" ]; then
+        apt-get update
+    fi
+    apt-get -y install --no-install-recommends git curl ca-certificates
+fi
+
+# Install Git LFS
+echo "Downloading Git LFS..."
+curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | bash
+echo "Installing Git LFS..."
+apt-get install -yq git-lfs
+git lfs install
+echo "Done!"