docker: reorganize ubuntu_wxgui for docker image creation (#2764)

* move docker/ubuntu/wxgui/Dockerfile to own directory in order to enable automated docker image creation.
* update README.md for new docker/ubuntu_wxgui/Dockerfile path

.github/workflows/docker.yml

@@ -51,6 +51,7 @@ jobs:
           - alpine
           - debian
           - ubuntu
+          - ubuntu_wxgui
       fail-fast: false
 
     steps:

README.md

@@ -84,7 +84,7 @@ docker run -it --rm --user=$(id -u):$(id -g) \
 B. Docker image **with graphical user interface - wxGUI**.
 
 ```bash
-docker build -t grassgis -f docker/ubuntu/wxgui/Dockerfile .
+docker build -t grassgis -f docker/ubuntu_wxgui/Dockerfile .
 ```
 
 Note that the first `grassgis` is the name of the image while the second

docker/ubuntu_wxgui/README.md

@@ -0,0 +1,88 @@
+# Docker GRASS GIS (Ubuntu Linux)
+
+Dockerfile with an [Ubuntu Linux](https://ubuntu.com/) image with
+[GRASS GIS](https://grass.osgeo.org/), [PDAL](https://pdal.io) support and
+[grass-session](https://github.com/zarch/grass-session/).
+
+Download size of this image is of approximately 2.6 GB.
+
+Clone this repository and change directory:
+
+```bash
+git clone https://github.com/OSGeo/grass.git
+cd grass
+```
+
+## Ubuntu stable
+
+__Build the docker with__:
+
+```bash
+docker build \
+         --file docker/ubuntu_wxgui/Dockerfile \
+         --tag grass-py3-pdal:stable-ubuntu .
+```
+
+View the images available using `sudo docker images` and open a bash terminal
+with:
+
+```bash
+$ docker run -it grass-py3-pdal:stable-ubuntu /bin/bash
+bash-5.0#
+```
+
+__To build a stable version__:
+
+change to the releasebranch or tag you want to build:
+
+```bash
+git checkout remotes/origin/releasebranch_8_2
+```
+
+and build and enter with:
+
+```bash
+$ docker build \
+         -f docker/ubuntu_wxgui/Dockerfile \
+         -t grass-py3-pdal:stable-ubuntu .
+
+$ docker run -it grass-py3-pdal:stable-ubuntu /bin/bash
+bash-5.0#
+```
+
+## Ubuntu latest
+
+__Build the docker with__:
+
+```bash
+$ docker build \
+         --file docker/ubuntu_wxgui/Dockerfile_ubuntu_wxgui_latest_pdal \
+         --tag grass-py3-pdal:latest-ubuntu .
+```
+
+View the images available using `sudo docker images` and open a bash terminal
+with:
+
+```bash
+$ docker run -it grass-py3-pdal:latest-ubuntu /bin/bash
+bash-5.0#
+```
+
+__To build a latest version__:
+
+change to the releasebranch or tag you want to build:
+
+```bash
+git checkout remotes/origin/releasebranch_8_2
+```
+
+and build and enter with:
+
+```bash
+$ docker build \
+         -f docker/ubuntu_wxgui/Dockerfile_ubuntu_wxgui_latest_pdal \
+         -t grass-py3-pdal:latest-ubuntu .
+
+$ docker run -it grass-py3-pdal:latest-ubuntu /bin/bash
+bash-5.0#
+```