[docs] added new Dockerfiles (#3347)

etc/docker/README.md

@@ -1,13 +1,13 @@
 
 ## Running wpantund from a Docker container:
 
-For a device that has a Thread radio attached to port /dev/ttyUSB0, start wpantund as follows:
+For a device that has a Thread radio attached to port `/dev/ttyUSB0`, start `wpantund` as follows:
 
 ```
 docker run --rm --detach -e "OPENTHREAD_DEVICE_PORT=/dev/ttyUSB0" --cap-add=NET_ADMIN --device=/dev/ttyUSB0 --name=wpantund openthread/wpantund
 ```
 
-Once wpantund is running, one can control the Thread interface with wpanctl as follows:
+Once `wpantund` is running, one can control the Thread interface with `wpanctl` as follows:
 
 ```
 docker exec -it wpantund wpanctl
@@ -17,11 +17,18 @@ docker exec -it wpantund wpanctl
 ## Content
 
 arm32v7_ubuntu_wpantund
-- wpantund running on ARMv7 (e.g. Raspberry Pi)
+- `wpantund` running on ARMv7 (e.g. Raspberry Pi)
 
 x86_ubuntu_wpantund
-- wpantund running on x86
+- `wpantund` running on x86
 
 ot_sim
-- OpenThread Posix simulator
+- OpenThread POSIX simulator
 
+codelab_otsim
+- For use with the [Docker Simulation Codelab](https://codelabs.developers.google.com/codelabs/openthread-simulation/), contains the OpenThread POSIX example and `wpantund` pre-built and ready to use.
+
+environment
+- Development environment with the GNU toolchain and all required OpenThread dependencies installed. OpenThread is not built in this image.
+
+Images built from these Dockerfiles are available to pull from [Docker Hub](https://hub.docker.com/u/openthread/). See [Docker Support on openthread.io](https://openthread.io/guides#docker_support) for more information.

etc/docker/codelab_otsim/Dockerfile

@@ -0,0 +1,39 @@
+# Ubuntu image with tools required to build OpenThread
+FROM ubuntu:18.04
+
+ENV DEBIAN_FRONTEND noninteractive
+
+# Install dependencies:
+RUN apt-get update -qq
+
+# Install packages needed for wpantund build and runtime:
+RUN apt-get install -y build-essential git make autoconf \
+                       autoconf-archive automake dbus libtool gcc \
+                       g++ gperf flex bison texinfo ncurses-dev \
+                       libexpat-dev python sed python-pip gawk \
+                       libreadline6-dev libdbus-1-dev \
+                       libboost-dev inetutils-ping
+
+RUN apt-get install -y --force-yes gcc-arm-none-eabi
+RUN pip install pexpect
+
+# Install wpantund:
+RUN mkdir -p ~/src && \
+    cd ~/src && \
+    git clone --recursive https://github.com/openthread/wpantund.git && \
+    cd wpantund && \
+    git checkout full/master && \
+    ./configure --sysconfdir=/etc && \
+    make && make install
+
+RUN mkdir -p /dev/net && mknod /dev/net/tun c 10 200 && chmod 600 /dev/net/tun
+
+# Restart dbus
+RUN service dbus restart
+
+# Install OpenThread
+RUN cd ~/src && \
+    git clone --recursive https://github.com/openthread/openthread.git && \
+    cd openthread && \
+    ./bootstrap && \
+    make -f examples/Makefile-posix

etc/docker/environment/Dockerfile

@@ -0,0 +1,19 @@
+# Ubuntu image with tools required to build OpenThread
+FROM ubuntu:18.04
+
+ENV DEBIAN_FRONTEND noninteractive
+
+# Install dependencies:
+RUN apt-get update -qq
+
+# Install packages needed for wpantund build and runtime:
+RUN apt-get install -y build-essential git make autoconf \
+                       autoconf-archive automake dbus libtool gcc \
+                       g++ gperf flex bison texinfo ncurses-dev \
+                       libexpat-dev python sed python-pip gawk \
+                       libreadline6-dev libdbus-1-dev \
+                       libboost-dev inetutils-ping
+
+RUN apt-get install -y --force-yes gcc-arm-none-eabi
+RUN pip install pexpect
+