ci: add dev container

.devcontainer/Dockerfile

@@ -0,0 +1,65 @@
+FROM mcr.microsoft.com/vscode/devcontainers/base:0.202.7-bullseye
+
+ARG NIX_VERSION=2.18.1
+ARG CHANNEL_URL=https://github.com/NixOS/nixpkgs/archive/1db42b7fe3878f3f5f7a4f2dc210772fd080e205.tar.gz
+
+ARG USER=vscode
+ARG UID=1000
+ARG GID=${UID}
+ARG NIX_INSTALLER=https://releases.nixos.org/nix/nix-${NIX_VERSION}/install
+ARG CACHIX_NAME=composable
+
+SHELL [ "/bin/bash", "-o", "pipefail", "-o", "errexit", "-c" ]
+
+RUN export DEBIAN_FRONTEND=noninteractive && \
+    apt-get update && \
+    apt-get install --yes --no-install-recommends \
+    ca-certificates \
+    curl \
+    locales \
+    make \
+    acl \
+    sudo \
+    xz-utils
+
+RUN usermod --append --groups sudo ${USER} --shell /bin/bash && \
+    usermod --append --groups root ${USER} --shell /bin/bash && \
+    adduser ${USER} root && \
+    sed --in-place 's/%sudo.*ALL/%sudo   ALL=(ALL:ALL) NOPASSWD:ALL/' /etc/sudoers
+
+RUN mkdir --parents /etc/nix/ && \
+    echo "sandbox = relaxed" >> /etc/nix/nix.conf && \
+    echo "experimental-features = nix-command flakes" >> /etc/nix/nix.conf && \    
+    passwd --delete root
+
+USER ${USER}
+ENV USER=${USER}
+
+ENV LOCALE_ARCHIVE=/usr/lib/locale/locale-archive
+ENV LANG=en_US.UTF-8
+ENV LANGUAGE=en_US:en
+ENV LC_ALL=en_US.UTF-8
+
+# Generate en_US.UTF-8 locale
+RUN locale-gen en_US.UTF-8 && \
+    sudo dpkg-reconfigure --frontend=noninteractive locales && \
+    sudo locale-gen en_US.UTF-8
+
+RUN curl --location ${NIX_INSTALLER} > ~/install.sh && \
+    chmod +x ~/install.sh  && \
+    ~/install.sh
+
+RUN source ~/.nix-profile/etc/profile.d/nix.sh && \
+    nix-channel --add ${CHANNEL_URL} nixpkgs && \
+    nix-channel --update 
+
+RUN echo "source ~/.nix-profile/etc/profile.d/nix.sh" >> ~/.profile && \
+    echo "source ~/.nix-profile/etc/profile.d/nix.sh" >> ~/.bashrc
+
+WORKDIR /home/${USER}/
+
+COPY --chown=${USER}:${USER} . . 
+
+RUN source ~/.nix-profile/etc/profile.d/nix.sh && \
+    nix-env --set-flag priority 10 nix-${NIX_VERSION} && \
+    export "ARCH_OS=$(uname -m)-$(uname -s | tr '[:upper:]' '[:lower:]')"

.devcontainer/devcontainer.json

@@ -0,0 +1,18 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/debian
+{
+	"name": "ockam",
+	"build": {
+		"dockerfile": "./Dockerfile",
+		"context": "."
+	},
+	"remoteEnv": {
+		"LANG": "en_US.UTF-8",
+		"LANGUAGE": "en_US:en",
+		"LC_ALL": "en_US.UTF-8"
+	},
+	"features": {
+		"ghcr.io/devcontainers/features/docker-outside-of-docker:1": {}
+	},
+	"postStartCommand": "sudo chmod 1777 /tmp/ && sudo setfacl -k /tmp"
+}