Adds dev container and docs (#1499)

ci/dev-image/Dockerfile

@@ -0,0 +1,13 @@
+FROM node:12
+
+RUN apt-get update && apt-get install -y \
+    curl \
+    iproute2 \
+    vim \
+    iptables \
+    net-tools \
+    libsecret-1-dev \
+    libx11-dev \
+    libxkbfile-dev
+
+CMD ["/bin/bash"]