Update test Docker image

* Update base image (which uses a newer python)
* Update linters
* Update other dependencies

Makefile

@@ -1,5 +1,5 @@
 PYTESTS = $(wildcard test/test_*.py)
-IMAGE = docker.io/yadm/testbed:2022-01-07
+IMAGE = docker.io/yadm/testbed:2023-07-12
 OCI = docker
 
 .PHONY: all

test/Dockerfile

@@ -1,9 +1,9 @@
-FROM ubuntu:18.04
+FROM ubuntu:23.04
 MAINTAINER Tim Byrne <sultan@locehilios.com>
 
 # Shellcheck and esh versions
-ARG SC_VER=0.8.0
-ARG ESH_VER=0.3.1
+ARG SC_VER=0.9.0
+ARG ESH_VER=0.3.2
 
 # Install prerequisites and configure UTF-8 locale
 RUN \
@@ -41,8 +41,8 @@ RUN cd /opt \
 
 # Upgrade pip3 and install requirements
 COPY test/requirements.txt /tmp/requirements.txt
-RUN python3 -m pip install --upgrade pip setuptools \
-  && python3 -m pip install --upgrade -r /tmp/requirements.txt \
+RUN python3 -m pip install --break-system-packages --upgrade pip setuptools \
+  && python3 -m pip install --break-system-packages --upgrade -r /tmp/requirements.txt \
   && rm -f /tmp/requirements
 
 # Install esh

test/conftest.py

@@ -43,7 +43,7 @@ def flake8_version():
 @pytest.fixture(scope='session')
 def yamllint_version():
     """Version of yamllint supported"""
-    return '1.25.0'
+    return '1.30.0'
 
 
 @pytest.fixture(scope='session')

test/requirements.txt

@@ -1,6 +1,8 @@
+black==23.1.0
 envtpl
-flake8==3.8.4
+flake8==6.0.0
+isort==5.12.0
 j2cli
-pylint==2.6.0
-pytest==6.2.1
-yamllint==1.25.0
+pylint==2.17.0
+pytest==7.2.2
+yamllint==1.30.0