Chronos: how to guide page cleaning (#5657)

* update

* add nblink

* windows guide fix

* add some updated

* update chronos

* add update image

* add new image

* add updates

* add update

* add new image

* fix typo

* fix notebook location

* add new index

* update

* fix some doc

* update tree

* fix typo

docs/readthedocs/source/_toc.yml

@@ -53,14 +53,12 @@ subtrees:
   - caption: Chronos
     entries:
       - file: doc/Chronos/Overview/chronos
-      - file: doc/Chronos/Overview/windows_guide
       - file: doc/Chronos/Overview/quick-tour
-      - file: doc/Chronos/Overview/deep_dive
       - file: doc/Chronos/Howto/index
       - file: doc/Chronos/QuickStart/index
+      - file: doc/Chronos/Overview/deep_dive
       - file: doc/Chronos/Overview/chronos_known_issue
 
-
   - caption: PPML
     entries:
       - file: doc/PPML/Overview/ppml

docs/readthedocs/source/doc/Chronos/Howto/docker_guide_single_node.md

@@ -0,0 +1,71 @@
+# Use Chronos in Container (docker)
+This dockerfile helps user to build a docker image where Chronos-nightly build version is deployed.
+
+## Build an image
+First clone the repo `BigDL` to the local.
+```bash
+git clone https://github.com/intel-analytics/BigDL.git
+```
+Then `cd` to the root directory of `BigDL`, and copy the Dockerfile to it. 
+```bash
+cd BigDL
+cp docker/chronos-nightly/Dockerfile ./Dockerfile
+```
+Then build your docker image with Dockerfile:
+```bash
+sudo docker build -t chronos-nightly:b1 . # You may choose any NAME:TAG you want.
+```
+(Optional) Or build with a proxy:
+```bash
+# typically, you need a proxy for building since there will be some downloading.
+sudo docker build \
+    --build-arg http_proxy=http://<your_proxy_ip>:<your_proxy_port> \ #optional
+    --build-arg https_proxy=http://<your_proxy_ip>:<your_proxy_port> \ #optional
+    -t chronos-nightly:b1 . # You may choose any NAME:TAG you want.
+```
+According to your network status, this building will cost **15-30 mins**. 
+
+**Tips:** When errors happen like `E: Package 'apt-utils' has no installation candidate`, it's usually related to the bad network status. Please build with a proxy.
+
+## Run the image
+```bash
+sudo docker run -it --rm --net=host chronos-nightly:b1 bash
+```
+
+## Use Chronos
+A conda environment is created for you automatically. `bigdl-chronos` and all of its depenencies are installed inside this environment.
+```bash
+(chronos) root@cpx-3:/opt/work#
+```
+
+## Run unitest examples on Jupyter Notebook for a quick use
+You can run these on Jupyter Notebook on single node server if you pursue a quick use on Chronos.
+```bash
+(chronos) root@cpx-3:/opt/work# cd /opt/work/colab-notebook #Unitest examples are here.
+```
+```bash
+(chronos) root@cpx-3:/opt/work# jupyter notebook --notebook-dir=./ --ip=* --allow-root #Start the Jupyter Notebook services.
+```
+After the Jupyter Notebook service is successfully started, you can connect to the Jupyter Notebook service from a browser.
+1. Get the IP address of the container
+2. Launch a browser, and connect to the Jupyter Notebook service with the URL: 
+</br>`https://container-ip-address:port-number/?token=your-token`
+</br>As a result, you will see the Jupyter Notebook opened.
+3. Open one of these `.ipynb` files, run through the example and learn how to use Chronos to predict time series.
+
+## Shut down docker container
+You should shut down the BigDL Docker container after using it.
+1. First, use `ctrl+p+q` to quit the container when you are still in it. 
+2. Then, you can list all the active Docker containers by command line:
+```bash
+sudo docker ps
+```
+You will see your docker containers:
+```bash
+CONTAINER ID        IMAGE                                        COMMAND                  CREATED             STATUS              PORTS               NAMES
+40de2cdad025        chronos-nightly:b1         "/opt/work/"   3 hours ago         Up 3 hours                              upbeat_al
+```
+3. Shut down the corresponding docker container by its ID:
+```bash
+sudo docker rm -f 40de2cdad025
+```

docs/readthedocs/source/doc/Chronos/Howto/how_to_create_forecaster.nblink

@@ -0,0 +1,3 @@
+{
+    "path": "../../../../../../python/chronos/colab-notebook/howto/how-to-create-forecaster.ipynb"
+}