added notes and dockerfile for pynode

docker/py+npm.dockerfile

@@ -0,0 +1,20 @@
+# dobromirpopov/pynode
+FROM python:slim
+
+# System dependencies
+RUN apt-get update && apt-get install -y git && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# Upgrade pip
+RUN pip install --upgrade pip
+
+# Install some basic utilities
+RUN apt-get update && apt-get install -y \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Node.js and npm
+RUN curl -sL https://deb.nodesource.com/setup_14.x | bash -
+RUN apt-get install -y nodejs
+
+RUN node --version
+RUN npm --version