enable docker container development environment

.devcontainer/devcontainer.json

@@ -26,13 +26,14 @@
 	"extensions": [
 		"ms-python.python",
 		"lextudio.restructuredtext",
-		"trond-snekvik.simple-rst"
+		"trond-snekvik.simple-rst",
+		"ms-azuretools.vscode-docker"
 	],
 	"portsAttributes": {
 		"80": {
 			"label": "HTTP_API"
 		}
-	}
+	},
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [],
@@ -44,7 +45,7 @@
 	// "shutdownAction": "none",
 
 	// Uncomment the next line to run commands after the container is created - for example installing curl.
-	// "postCreateCommand": "apt-get update && apt-get install -y curl",
+	"postCreateCommand": "ln -f -s /usr/local/bin/python3 /usr/bin/python3 && python3 -m pip install -U sphinx rstcheck snooty && python3 setup.py develop",
 
 	// Uncomment to connect as a non-root user if you've added one. See https://aka.ms/vscode-remote/containers/non-root.
 	// "remoteUser": "vscode"

.devcontainer/docker-compose.yml

@@ -25,7 +25,7 @@ services:
       - .:/workspace:cached
 
       # Uncomment the next line to use Docker from inside the container. See https://aka.ms/vscode-remote/samples/docker-from-docker-compose for details.
-      # - /var/run/docker.sock:/var/run/docker.sock 
+      - /var/run/docker.sock:/var/run/docker.sock 
 
     # Uncomment the next four lines if you will use a ptrace-based debugger like C++, Go, and Rust.
     # cap_add:

dev.dockerfile

@@ -1,6 +1,6 @@
 # https://github.com/pycom/pycom-libraries/tree/master/pycom-docker-fw-build
 
-FROM debian:buster-slim
+FROM python:3.9-slim-buster
 
 RUN apt-get update && \ 
     apt-get -y install curl zip git wget && \
@@ -14,7 +14,7 @@ RUN apt-get update && \
     git clone --recursive https://github.com/pycom/pycom-micropython-sigfox.git
 
 ADD tools/pycom-firmware-build /usr/bin/build
-ADD requirements-cpython.txt requirements-build.txt requirements-dev.txt requirements-test.txt /tmp/terkin/requirements/
+ADD requirements-cpython.txt requirements-docs.txt requirements-build.txt requirements-dev.txt requirements-test.txt /tmp/terkin/requirements/
 
 RUN  find /tmp/terkin/requirements/ -name "requirements*.txt" -type f -exec python3 -m pip install -r '{}' ';'