VSCode : Enable Development inside Docker Container

This will enable seamless Development of optee_os Project with VSCode
inside Docker container.

The VSCode Container provides:

* Automatic Mapping of the host user UID/GID inside the container
* GCC Cross-Compilers (aarch64/armhf/riscv64)
* GDB Multiarch for Debugging
* Remote SSH on the Target with seamless ssh mapping of the Host
  inside the container (Linux/Windows WSL)
* Git and Git Extensions to work and send Patches

Note: This require Docker installation for Linux/or Windows :
      [1] https://docs.docker.com/engine/install

      VSCode Extensions (extensions.json) will be recommended
      for the installation

For more Information :
[2] https://code.visualstudio.com/docs/devcontainers/containers
[3] https://www.youtube.com/watch?v=C_5tDWsWSj0
[4] https://www.youtube.com/watch?v=b1RavPr_878

Signed-off-by: Ayoub Zaki <[email protected]>
Acked-by: Jerome Forissier <[email protected]>

.devcontainer/Dockerfile.vscode

@@ -0,0 +1,48 @@
+FROM ubuntu:22.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt update && apt upgrade -y && apt-get install -y \
+    build-essential \
+    autoconf \
+    bc \
+    bison \
+    ccache \
+    clang \
+    lld \
+    cmake \
+    codespell \
+    device-tree-compiler \
+    expect \
+    flex \
+    gcc-aarch64-linux-gnu \
+    gcc-arm-linux-gnueabihf \
+    gcc-riscv64-linux-gnu \
+    gdb-multiarch \
+    gdisk \
+    gettext \
+    libncurses5 \
+    libssl-dev \
+    lsb-release \
+    python3 \
+    python3-pip \
+    python3-cryptography \
+    python3-pycodestyle \
+    python3-pycryptodome \
+    python3-pyelftools \
+    sudo \
+    uuid-dev \
+    wget \
+    curl \
+    git-core \
+    git-man \
+    git-email \
+    sudo \
+    nano \
+    vim \
+    openssh-client \
+    bash-completion
+
+# Add non root user
+RUN useradd -ms /bin/bash optee
+RUN echo "optee ALL=(ALL) NOPASSWD: ALL" | tee -a /etc/sudoers
+USER optee

.devcontainer/devcontainer.json

@@ -0,0 +1,29 @@
+{
+	"name": "optee-os-docker",
+	"build": {
+		"dockerfile": "Dockerfile.vscode"
+	},
+
+	"customizations": {
+		"vscode": {
+			"settings": {
+				"terminal.integrated.profiles.linux": {
+					"bash": {
+					  "path": "/bin/bash",
+					  "args": ["-l"]
+					}
+				},
+				"terminal.integrated.defaultProfile.linux": "bash"
+			},
+			"extensions": [
+				"ms-vscode.cpptools",
+				"eamodio.gitlens"
+			]
+		}
+	},
+
+	// Map the host .ssh folder into the container for a seamless ssh experience
+	"mounts": [
+		"source=${localEnv:HOME}${localEnv:USERPROFILE}/.ssh,target=/home/optee/.ssh,type=bind,consistency=cached"
+	]
+}

.gitignore

@@ -12,3 +12,5 @@
 !.gitattributes
 !.gitignore
 !.github
+!.devcontainer
+!.vscode

.vscode/extensions.json

@@ -0,0 +1,10 @@
+{
+	"recommendations": [
+                "ms-vscode-remote.remote-containers",
+                "ms-vscode-remote.remote-wsl",
+                "ms-vscode-remote.vscode-remote-extensionpack",
+                "ms-vscode.cpptools-extension-pack",
+                "ms-vscode.cpptools",
+                "eamodio.gitlens",
+	]
+}