docker: implement multi-stage-builds for ubuntu (OSGeo#3170)

* test grass.script.setup

* test script for docker images

* black

* add test instructions

* multi-stage-build similar to alpine

* Apply suggestions from code review

Co-authored-by: Carmen Tawalika <mmacata@users.noreply.github.com>

* add test for GDAL-plugin

* copy GDAL-plugin and set path

* Update docker/ubuntu/Dockerfile

Co-authored-by: Edouard Choinière <27212526+echoix@users.noreply.github.com>

* ignore dist.* in docker builds

* address review comments

* separate datum grid (proj >= 7) stage

* use network grids

* GUI build argument

* GUI build argument

---------

Co-authored-by: ninsbl <stbl@nve.no>
Co-authored-by: Carmen Tawalika <mmacata@users.noreply.github.com>
Co-authored-by: Edouard Choinière <27212526+echoix@users.noreply.github.com>

.dockerignore

@@ -5,6 +5,8 @@ docker
 .github
 .travis
 .travis.yml
+# Do not copy files from previous compilations
+dist.*
 
 # The following git files are needed by GRASS GIS to extract the revision
 # during compilation. If you are not using one of the Dockerimages from this

docker/testdata/test_docker_image.sh

@@ -0,0 +1,66 @@
+#!/bin/sh
+
+set -e
+
+# to be used in Dockerfile
+
+# Display environment
+printf "\n############\nPrinting defined environment variables:\n############\n"
+printenv
+
+# run simple LAZ test
+cp docker/testdata/simple.laz /tmp/
+cp docker/testdata/test_grass_session.py /tmp/
+cp docker/testdata/test_grass_python.py /tmp/
+cp -r demolocation /tmp/
+
+# Test gdal-grass-plugin
+printf "\n############\nTesting the gdal_grass plugin:\n############\n"
+gdalinfo --formats | grep "GRASS -raster-"
+
+# Test grass-session
+printf "\n############\nTesting grass_session:\n############\n"
+/usr/bin/python3 /tmp/test_grass_session.py
+
+# Test grass-setup
+printf "\n############\nTesting grass script setup:\n############\n"
+export DEMOLOCATION=/tmp/demolocation/PERMANENT
+/usr/bin/python3 /tmp/test_grass_python.py
+
+# Test PDAL
+printf "\n############\nTesting PDAL with laz:\n############\n"
+grass --tmp-location EPSG:25832 --exec r.in.pdal input="/tmp/simple.laz" output="count_1" method="n" resolution=1 -g
+
+# Test GRASS GIS Python-addon installation
+# add dependency
+printf "\n############\nTesting GRASS GIS Python-addon installation:\n############\n"
+/usr/bin/python3 -m pip install --no-cache-dir scikit-learn
+
+grass --tmp-location XY --exec g.extension extension=r.learn.ml2 operation=add && \
+	   grass --tmp-location XY --exec g.extension extension=r.learn.ml2 operation=remove -f
+
+# cleanup dependency
+/usr/bin/python3 -m pip uninstall -y scikit-learn
+
+# Test GRASS GIS C-addon installation: raster and vector
+printf "\n############\nTesting GRASS GIS C-addon installation:\n############\n"
+grass --tmp-location XY --exec g.extension extension=r.gwr operation=add && \
+	   grass --tmp-location XY --exec g.extension extension=r.gwr operation=remove -f
+grass --tmp-location XY --exec g.extension extension=v.centerpoint operation=add && \
+	   grass --tmp-location XY --exec g.extension extension=v.centerpoint operation=remove -f
+
+# show GRASS GIS, PROJ, GDAL etc versions
+printf "\n############\nPrinting GRASS, PDAL and Python versions:\n############\n"
+grass --tmp-location EPSG:4326 --exec g.version -rge && \
+    pdal --version && \
+    python3 --version
+
+# Test presence of central python packages
+printf "\n############\nPrinting versions of central python packages:\n############\n"
+python3 -c "import psycopg2;import numpy as np;print(psycopg2.__version__);print(np.__version__)"
+
+# Run testsuite
+if [ $TESTSUITE ] ; then
+  printf "\n############\nRunning the testsuite:\n############\n"
+  bash /grassdb/.github/workflows/test_thorough.sh
+fi

docker/testdata/test_grass_python.py

@@ -0,0 +1,22 @@
+# Import GRASS Python bindings
+import os
+import grass.script as gs
+
+# hint: do not use ~ as an alias for HOME
+with gs.setup.init(
+    # run in PERMANENT mapset of demolocation in GRASS GIS source
+    os.environ["DEMOLOCATION"]  # "/grassdata/demolocation/PERMANENT",
+):
+    print("grass-setup: tests for PROJ, GDAL, PDAL, GRASS GIS")
+    print(gs.parse_command("g.gisenv", flags="s"))
+
+    # simple test: just scan the LAZ file
+    gs.run_command(
+        "r.in.pdal",
+        input="/tmp/simple.laz",
+        output="count_1",
+        method="n",
+        flags="g",
+        resolution=1,
+        overwrite=True,
+    )