add vscode devcontainer config

.devcontainer/Dockerfile

+FROM ubuntu:bionic
+
+# Set the default shell to bash instead of sh
+ENV SHELL /bin/bash
+# Update path to include virtualenv
+ENV PATH "/usr/local/pyvenv/bin:${PATH}"
+# Set locales
+ENV LANG C.UTF-8
+ENV LC_ALL C.UTF-8
+
+# Configure apt
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update && \
+    apt-get -y install --no-install-recommends apt-utils 2>&1
+
+# Install git, required tools
+RUN apt-get update && \
+    apt-get install -y \
+        apt-transport-https \
+        bash-completion \
+        build-essential \
+        ca-certificates \
+        curl \
+        git \
+        gnupg-agent \
+        libffi-dev \
+        libssl-dev \
+        lsb-release \
+        procps \
+        python3 \
+        python3-dev \
+        python3-venv \
+        shellcheck \
+        software-properties-common \
+        unzip \
+        vim-tiny \
+    2>&1
+
+# Configure shell
+RUN sed -i 's/#force_color_prompt=yes/force_color_prompt=yes/' /root/.bashrc && \
+    echo ". /etc/bash_completion" >> /root/.bashrc
+
+# Install Docker CE CLI.
+RUN curl -fsSL https://download.docker.com/linux/$(lsb_release -is | tr '[:upper:]' '[:lower:]')/gpg | apt-key add - 2>/dev/null && \
+    add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/$(lsb_release -is | tr '[:upper:]' '[:lower:]') $(lsb_release -cs) stable" && \
+    apt-get update && \
+    apt-get install -y docker-ce-cli
+
+# Install Poetry
+RUN python3 -m venv /usr/local/pyvenv && \
+    pip install -U pip wheel 2>&1 && \
+    pip install psutil pyOpenSSL pyspf requests defusedxml 2>&1 && \
+    pip install black flake8 pre-commit pylint pysnooper 2>&1
+
+# Clean up
+RUN apt-get autoremove -y && \
+    apt-get clean -y && \
+    rm -rf /var/lib/apt/lists/*
+ENV DEBIAN_FRONTEND=dialog

.devcontainer/devcontainer.json

+{
+    "name": "envsetup",
+    "dockerComposeFile": "docker-compose.yml",
+    "service": "app",
+    "workspaceFolder": "/workspace",
+    "extensions": [
+        // editor
+        "editorconfig.editorconfig",
+        "mikestead.dotenv",
+        // python
+        "ms-python.python",
+        // docker
+        "peterjausovec.vscode-docker"
+    ]
+}

.devcontainer/docker-compose.yml

+---
+
+version: '3'
+
+services:
+  app:
+    build:
+      context: ..
+      dockerfile: .devcontainer/Dockerfile
+    volumes:
+      - ..:/workspace
+      - ~/.config/git/config:/root/.config/git/config
+      - ~/.config/git/ignore:/root/.config/git/ignore
+      - ${SSH_AUTH_SOCK}:/ssh-agent
+      - /var/run/docker.sock:/var/run/docker.sock
+    environment:
+      - SSH_AUTH_SOCK=/ssh-agent
+    working_dir: /workspace
+    command: sleep infinity
+
+...