TST: update tox.ini and remove jsonschame from Dockerfile

.docker/Dockerfile

@@ -30,6 +30,5 @@ COPY . /git
 RUN rm -r /git/.git \
     && mv /git/.docker/pycaosdb.ini /git/integrationtests
 RUN cd /git && pip3 install .[h5-crawler]
-RUN pip3 install jsonschema
 WORKDIR /git/integrationtests
 CMD /wait-for-it.sh caosdb-server:10443 -t 500 -- ./test.sh --force

tox.ini

@@ -2,12 +2,12 @@
 envlist=py36, py37, py38, py39
 skip_missing_interpreters = true
 [testenv]
-deps=nose
-    pandas
+deps=pandas
     git+https://gitlab.indiscale.com/caosdb/src/caosdb-pylib.git@dev
     pytest
     pytest-cov
     openpyxl
     xlrd == 1.2
     h5py
+    jsonschema
 commands=py.test --cov=caosadvancedtools -vv {posargs}