docs: Add Dockerfile and docker build instructions

build/docker/Dockerfile

@@ -0,0 +1,26 @@
+# Alpine was chosen by providing a node container less than 100mb
+FROM node:17.7.1-alpine3.15
+
+WORKDIR /usr/src/app
+
+# install dependencies
+RUN apk add --update --no-cache openssh git python3 openjdk11-jre-headless
+RUN ln -sf python3 /usr/bin/python
+
+# Change to non-root user
+USER node
+
+# Python user's setup
+RUN mkdir -p /home/node/.local/bin
+ENV PATH="$PATH:/home/node/.local/bin"
+RUN python3 -m ensurepip
+RUN pip3 install --no-cache --upgrade pip setuptools
+
+# Prevent proxy timeout error (very slow connections)
+RUN npm config set fetch-retry-mintimeout 20000
+RUN npm config set fetch-retry-maxtimeout 120000
+RUN npm config rm proxy
+RUN npm config rm https-proxy
+
+# Run compilation
+CMD [ "python", "build/all.py" ]

build/docker/docker-compose.yml

@@ -0,0 +1,10 @@
+version: '3'
+
+services:
+  shaka-compiler:
+    build: ./
+    container_name: shaka-compiler
+    volumes:
+      - ../../:/usr/src/app
+
+# Others services can be added here

docs/tutorials/welcome.md

@@ -35,6 +35,8 @@ To get the sources and compile the library, you will need:
     * _NOTE: A local web server is required because browsers place restrictions
       on applications from file:/// URLs._
 
+If you just want to compile for export to other projects, you might consider compiling through a docker container. (see compile instructions)
+
 To quickly install these prerequisites on Ubuntu or Debian, you can run this
 script:
 
@@ -62,6 +64,12 @@ cd shaka-player
 python build/all.py
 ```
 
+Alternatively you can use a docker container:
+```sh
+cd build/docker
+docker-compose run --rm shaka-compiler
+```
+
 The output is:
  * dist/shaka-player.compiled.js (compiled bundle)
  * dist/shaka-player.compiled.debug.js (debug bundle)