Upgrade to focal and add python 3.10

Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 # some environment variables
 ENV LANG=C.UTF-8 \
@@ -30,6 +30,8 @@ RUN set -x \
     python3.8-venv \
     python3.9 \
     python3.9-venv \
+    python3.10 \
+    python3.10-venv \
     postgresql-client \
     # expect provides the unbuffer utility
     tcl \
@@ -46,16 +48,15 @@ RUN set -x \
     # gettext to manipulate .pot, .po files
     gettext \
   # wkhtmltopdf
-  && wget -q -O /tmp/wkhtmltox.deb https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.bionic_amd64.deb \
-  && echo "f1689a1b302ff102160f2693129f789410a1708a /tmp/wkhtmltox.deb" | sha1sum -c - \
+  && wget -q -O /tmp/wkhtmltox.deb https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox_0.12.6-1.focal_amd64.deb \
+  && echo "ad0264869fe40ccfb91c32e9be7318bfabf3864f6a8a15567f7a38afe4a9a932 /tmp/wkhtmltox.deb" | sha256sum -c - \
   && apt -y install /tmp/wkhtmltox.deb \
   && rm -f /tmp/wkhtmltox.deb \
   # cleanup
   && rm -fr /var/lib/apt/lists/*
 
 # Install pipx, which we use to install other python tools.
 ENV PIPX_BIN_DIR=/usr/local/bin
-ENV PIPX_DEFAULT_PYTHON=/usr/bin/python3.8
 ENV PIPX_HOME=/opt/pipx
 RUN python3 -m venv /opt/pipx/venv \
     && /opt/pipx/venv/bin/pip install --no-cache-dir pipx \

README.rst

@@ -3,7 +3,7 @@ ACSONE docker image for running Odoo CI workloads
 
 This Odoo image has the following characteristics:
 
-- Based on Ubuntu 18.04.
+- Based on Ubuntu 20.04.
 - Minimal dependencies to run ACSONE Odoo CI jobs
 
   - git (with user.name=GitLab and [email protected])
@@ -12,7 +12,7 @@ This Odoo image has the following characteristics:
   - openssh-client
   - rsync
   - make
-  - python2.7/3.5/3.6/3.7/3.8/3.9
+  - python2.7/3.5/3.6/3.7/3.8/3.9/3.10
   - virtualenv
   - postgresql client
   - lessc
@@ -28,7 +28,7 @@ This Odoo image has the following characteristics:
 
   - disable strict host key checking
 
-- Odoo 8, 9, 10, 11, 12, 13, 14 are supported.
+- Odoo 8, 9, 10, 11, 12, 13, 14, 15 are supported.
 - Odoo is *not* preinstalled.
 - Runs as non-privileged user named ``gitlab-runner``