Update Dockerfile

https://renku.discourse.group/t/error-during-environment-creation/407/10

Dockerfile

@@ -37,11 +37,18 @@ RUN jupyter labextension install jupyterlab_tensorboard && \
 ARG RENKU_VERSION=0.16.1
 
 ########################################################
-# Do not edit this section and do not add anything below
+# Install renku from pypi or from github if it's a dev version
 
 RUN if [ -n "$RENKU_VERSION" ] ; then \
-    pipx uninstall renku && \
-    pipx install --force renku==${RENKU_VERSION} \
-    ; fi
-
-########################################################
+        currentversion=$(pipx list | sed -n "s/^\s*package\srenku\s\([^,]\+\),.*$/\1/p") ; \
+        if [ "$RENKU_VERSION" != "$currentversion" ] ; then \
+            pipx uninstall renku ; \
+            /home/jovyan/.local/pipx/shared/bin/pip install setuptools==57.5.0; \
+            gitversion=$(echo "$RENKU_VERSION" | sed -n "s/^[[:digit:]]\+\.[[:digit:]]\+\.[[:digit:]]\+\(\.dev[[:digit:]]\+\)*\(+g\([a-f0-9]\+\)\)*\(+dirty\)*$/\3/p"); \
+            if [ -n "$gitversion" ] ; then \
+                pipx install --force "git+https://github.com/SwissDataScienceCenter/renku-python.git@$gitversion" ;\
+            else \
+                pipx install --force renku==${RENKU_VERSION} ;\
+            fi \
+        fi \
+    fi