Docker/CI: Update to "focal" and latest build

Move us up to being based on Ubuntu 20.04 "focal" and the latest tag
from Ubuntu.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/.azure-pipelines.yml b/.azure-pipelines.yml
index 35ab7f3..01858cf 100644
--- a/.azure-pipelines.yml
+++ b/.azure-pipelines.yml
@@ -2,7 +2,7 @@
   windows_vm: vs2017-win2016
   ubuntu_vm: ubuntu-18.04
   macos_vm: macOS-10.15
-  ci_runner_image: trini/u-boot-gitlab-ci-runner:bionic-20200807-02Sep2020
+  ci_runner_image: trini/u-boot-gitlab-ci-runner:focal-20210416-09Jun2021
   # Add '-u 0' options for Azure pipelines, otherwise we get "permission
   # denied" error when it tries to "useradd -m -u 1001 vsts_azpcontainer",
   # since our $(ci_runner_image) user is not root.
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d072e83..9196aef 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@
 
 # Grab our configured image.  The source for this is found at:
 # https://source.denx.de/u-boot/gitlab-ci-runner
-image: trini/u-boot-gitlab-ci-runner:bionic-20200807-02Sep2020
+image: trini/u-boot-gitlab-ci-runner:focal-20210416-09Jun2021
 
 # We run some tests in different order, to catch some failures quicker.
 stages:
diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index d2f0074..be84149 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -2,7 +2,7 @@
 # This Dockerfile is used to build an image containing basic stuff to be used
 # to build U-Boot and run our test suites.
 
-FROM ubuntu:bionic-20200807
+FROM ubuntu:focal-20210416
 MAINTAINER Tom Rini <trini@konsulko.com>
 LABEL Description=" This image is for building U-Boot inside a container"
 
@@ -12,7 +12,7 @@
 # Add LLVM repository
 RUN apt-get update && apt-get install -y gnupg2 wget xz-utils && rm -rf /var/lib/apt/lists/*
 RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
-RUN echo deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-10 main | tee /etc/apt/sources.list.d/llvm.list
+RUN echo deb http://apt.llvm.org/focal/ llvm-toolchain-focal-10 main | tee /etc/apt/sources.list.d/llvm.list
 
 # Manually install the kernel.org "Crosstool" based toolchains for gcc-7.3
 RUN wget -O - https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/9.2.0/x86_64-gcc-9.2.0-nolibc-aarch64-linux.tar.xz | tar -C /opt -xJ
@@ -62,10 +62,9 @@
 	imagemagick \
 	iputils-ping \
 	libguestfs-tools \
-	libisl15 \
 	liblz4-tool \
 	libpixman-1-dev \
-	libpython-dev \
+	libpython3-dev \
 	libsdl1.2-dev \
 	libsdl2-dev \
 	libssl-dev \
@@ -80,12 +79,12 @@
 	picocom \
 	parted \
 	pkg-config \
-	python \
-	python-dev \
-	python-pip \
-	python-virtualenv \
+	python-is-python3 \
+	python3 \
+	python3-dev \
 	python3-pip \
 	python3-sphinx \
+	python3-virtualenv \
 	rpm2cpio \
 	sbsigntool \
 	sloccount \