Remove support for Ubuntu 18 (Bionic)

.github/workflows/ci.yml

@@ -51,19 +51,6 @@ jobs:
       - name: build and test
         run: ./scripts/continuous_integration/github_actions/macos_catalina/build_test
         shell: zsh -efuo pipefail {0}
-  ros_dashing:
-    name: ros 2 dashing
-    runs-on: ubuntu-latest
-    container: ubuntu:bionic
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: setup
-        run: ./scripts/continuous_integration/github_actions/ros_dashing/setup
-        shell: bash
-      - name: build and test
-        run: ./scripts/continuous_integration/github_actions/ros_dashing/build_test
-        shell: bash
   ros_foxy:
     name: ros 2 foxy
     runs-on: ubuntu-latest
@@ -77,32 +64,6 @@ jobs:
       - name: build and test
         run: ./scripts/continuous_integration/github_actions/ros_foxy/build_test
         shell: bash
-  ubuntu_bionic:
-    name: ubuntu 18.04 bionic
-    runs-on: ubuntu-latest
-    container: ubuntu:bionic
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: setup
-        run: ./scripts/continuous_integration/github_actions/ubuntu_bionic/setup
-        shell: bash
-      - name: build and test
-        run: ./scripts/continuous_integration/github_actions/ubuntu_bionic/build_test
-        shell: bash
-  ubuntu_bionic_apt:
-    name: ubuntu 18.04 bionic apt
-    runs-on: ubuntu-latest
-    container: ubuntu:bionic
-    steps:
-      - name: checkout
-        uses: actions/checkout@v2
-      - name: setup
-        run: ./scripts/continuous_integration/github_actions/ubuntu_apt/setup
-        shell: bash
-      - name: build and test
-        run: ./scripts/continuous_integration/github_actions/ubuntu_apt/build_test
-        shell: bash
   ubuntu_focal:
     name: ubuntu 20.04 focal
     runs-on: ubuntu-latest

Jenkinsfile

@@ -31,7 +31,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  *****************************************************************************/
 
-node('drake-external-examples-linux-bionic-unprovisioned') {
+node('drake-external-examples-linux-focal-unprovisioned') {
   timeout(600) {
     ansiColor('xterm') {
       def triggers = []

drake_ament_cmake_installed/README.md

@@ -7,11 +7,11 @@ Drake [binary packages](https://drake.mit.edu/from_binary.html).
 
 ## Instructions
 
-To use `ament_cmake` and `colcon` from the ROS 2 Dashing package archive, install
+To use `ament_cmake` and `colcon` from the ROS 2 Foxy package archive, install
 the required packages and configure your environment as follows:
 ```
-sudo ../scripts/setup/linux/ubuntu/bionic/install_prereqs --ros-dashing
-source /opt/ros/dashing/setup.bash
+sudo ../scripts/setup/linux/ubuntu/focal/install_prereqs --ros-foxy
+source /opt/ros/foxy/setup.bash
 ```
 
 To build the `drake_ament_cmake_installed` library:

drake_bazel_external/README.md

@@ -10,7 +10,7 @@ For an introduction to Bazel, refer to
 First, install the required Ubuntu packages:
 
 ```
-sudo ../scripts/setup/linux/ubuntu/bionic/install_prereqs
+sudo ../scripts/setup/linux/ubuntu/focal/install_prereqs
 ```
 
 Then, to build and test all apps:

drake_bazel_installed/README.md

@@ -11,7 +11,7 @@ For an introduction to Bazel, refer to
 First, install the required Ubuntu packages:
 
 ```
-sudo ../scripts/setup/linux/ubuntu/bionic/install_prereqs
+sudo ../scripts/setup/linux/ubuntu/focal/install_prereqs
 ```
 
 Then, to build and test all apps:

drake_bazel_installed/WORKSPACE

@@ -44,7 +44,7 @@ py_repositories()
 # Choose which nightly build of Drake to use.
 DRAKE_RELEASE = "latest"  # Can also use YYYYMMDD here, e.g., "20191026".
 DRAKE_CHECKSUM = ""       # When using YYYYMMDD, best to add a checksum here.
-OS_CODENAME = "bionic"    # Permitted values are "bionic" or "focal" or "mac".
+OS_CODENAME = "focal"     # Permitted values are "focal" or "mac".
 
 # To use a local unpacked Drake binary release instead of an http download, set
 # this variable to the correct path, e.g., "/opt/drake".

drake_catkin_installed/README.md

@@ -6,17 +6,17 @@ Drake [binary packages](https://drake.mit.edu/from_binary.html).
 
 ## Instructions
 
-If you wish use `catkin` from the Ubuntu package archive, without ROS Melodic,
+If you wish use `catkin` from the Ubuntu package archive, without ROS Noetic,
 install the required packages as follows:
 ```
-sudo ../scripts/setup/linux/ubuntu/bionic/install_prereqs
+sudo ../scripts/setup/linux/ubuntu/focal/install_prereqs
 ```
 
-If you wish use `catkin` from ROS Melodic package archive, install the required
+If you wish use `catkin` from ROS Noetic package archive, install the required
 packages and configure your environment as follows:
 ```
-sudo ../scripts/setup/linux/ubuntu/bionic/install_prereqs --ros-melodic
-source /opt/ros/melodic/setup.bash
+sudo ../scripts/setup/linux/ubuntu/focal/install_prereqs --ros-noetic
+source /opt/ros/noetic/setup.bash
 ```
 
 To build the `drake_catkin_installed` library:

drake_cmake_installed/README.md

@@ -4,14 +4,14 @@ This uses the CMake `find_package(drake)` mechanism to find an installed instanc
 
 # Instructions
 
-These instructions are only supported for Ubuntu 18.04 (Bionic).
+These instructions are only supported for Ubuntu 20.04 (Focal).
 
 ```shell
 ###############################################################
 # Install Prerequisites
 ###############################################################
 # Various system dependencies
-sudo ../scripts/setup/linux/ubuntu/bionic/install_prereqs
+sudo ../scripts/setup/linux/ubuntu/focal/install_prereqs
 
 # (Optionally) Install GTest
 # You could also explicitly pull gtest into the CMake build directly:
@@ -26,11 +26,11 @@ sudo cp *.a /usr/local/lib
 ###############################################################
 
 # 1) A specific version (date-stamped)
-# curl -O https://drake-packages.csail.mit.edu/drake/nightly/drake-20191015-bionic.tar.gz
+# curl -O https://drake-packages.csail.mit.edu/drake/nightly/drake-20220309-focal.tar.gz
 
 # 2) The latest (usually last night's build)
-curl -O https://drake-packages.csail.mit.edu/drake/nightly/drake-latest-bionic.tar.gz
-sudo tar -xvzf drake-latest-bionic.tar.gz -C /opt
+curl -O https://drake-packages.csail.mit.edu/drake/nightly/drake-latest-focal.tar.gz
+sudo tar -xvzf drake-latest-focal.tar.gz -C /opt
 
 # 3) Manual Installation
 # git clone https://github.com/RobotLocomotion/drake.git

drake_cmake_installed_apt/README.md

@@ -2,7 +2,7 @@
 
 This example uses the [`cmake`](https://cmake.org/) build system with an
 instance of Drake installed using the
-[APT](https://manpages.ubuntu.com/manpages/bionic/man8/apt.8.html) package
+[APT](https://manpages.ubuntu.com/manpages/focal/man8/apt.8.html) package
 manager.
 
 ## Instructions

scripts/continuous_integration/common/drake_ament_cmake_installed

@@ -32,9 +32,6 @@
 set -eo pipefail
 
 # AMENT_TRACE_SETUP_FILES and other variables are unbound.
-if [[ -f /opt/ros/dashing/setup.bash ]]; then
-  source /opt/ros/dashing/setup.bash
-fi
 
 if [[ -f /opt/ros/foxy/setup.bash ]]; then
   source /opt/ros/foxy/setup.bash