OpenCyphal#56 adding GCC7

Also had to remove qemu (deprecated for Ubuntu 22.04 I guess?) but we weren't using it.

README.md

@@ -25,6 +25,7 @@ like [libcanard](https://github.com/OpenCyphal/libcanard) and
 
 | tag      | Python | GCC (native) | GCC (arm-none-eabi) | Clang (native) | Cmake | Host Platforms | Other Utilities |
 |----------|--------|--------------|---------------------|----------------|-------|----------------|-----------------|
+| [ts22.4.11](https://github.com/OpenCyphal/docker_toolchains/pkgs/container/toolshed) | 3.10 | 12.3.0 | 13.3.1 | 18.1.3 | 3.30.1 | <ul><li>linux/amd64</li><li>linux/arm64</li></ul> | <li>can-utils</li><li>doxygen 1.10.0</li><li>nvm</li><li>node 20.x</li><li>nox</li><li>govr</li><li>gcc-multilib (amd64 only)</li><li>gcc7</li></ul> |
 | [ts22.4.10](https://github.com/OpenCyphal/docker_toolchains/pkgs/container/toolshed) | 3.10 | 12.3.0 | 13.3.1 | 18.1.3 | 3.30.1 | <ul><li>linux/amd64</li><li>linux/arm64</li></ul> | <ul><li>qemu</li><li>can-utils</li><li>doxygen 1.10.0</li><li>nvm</li><li>node 20.x</li><li>nox</li><li>govr</li><li>gcc-multilib (amd64 only)</li></ul> |
 | [ts22.4.8](https://github.com/OpenCyphal/docker_toolchains/pkgs/container/toolshed) | 3.10 | 12.3.0 | (N/A) | 18.1.3 | 3.22.1 | <ul><li>linux/amd64</li><li>linux/arm64</li></ul> | <ul><li>qemu</li><li>can-utils</li><li>doxygen 1.10.0</li><li>nvm</li><li>node 20.x</li><li>nox</li><li>govr</li><li>gcc-multilib (amd64 only)</li></ul> |
 | [ts22.4.7](https://github.com/OpenCyphal/docker_toolchains/pkgs/container/toolshed) | 3.10 | 12.3.0 | (N/A) | 18.1.3 | 3.22.1 | <ul><li>linux/amd64</li><li>linux/arm64</li></ul> | <ul><li>qemu</li><li>can-utils</li><li>doxygen 1.10.0</li><li>nvm</li><li>node 20.x</li><li>nox</li><li>govr</li></ul> |

toolshed/Dockerfile

@@ -36,7 +36,7 @@ RUN ./provision.sh
 RUN ./provision-${TARGETARCH}.sh
 RUN ./post-provision.sh
 
-# INSTALL THE PATH FOR INTERATIVE SESSIONS
+# INSTALL THE PATH FOR INTERACTIVE SESSIONS
 RUN echo "export PATH=$PATH" >> ~/.bashrc
 
 # LEAVE THE WORKDIR AS /repo

toolshed/pre-provision.sh

@@ -33,7 +33,9 @@ cat kitware-archive-latest.asc | gpg --dearmor - | tee /etc/apt/trusted.gpg.d/ki
 
 apt-get -y install software-properties-common
 apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6AF7F09730B3F0A4
+apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 16FAAD7AF99A65E2
 apt-add-repository 'deb https://apt.kitware.com/ubuntu/ jammy main'
+apt-add-repository 'deb https://ports.ubuntu.com/ubuntu-ports focal main universe'
 add-apt-repository -y ppa:deadsnakes/ppa
 
 # setup locales in the container so Python can default to utf-8.

toolshed/provision.sh

@@ -33,13 +33,13 @@ apt-get -y install lcov
 apt-get -y install valgrind
 apt-get -y install graphviz
 apt-get -y install curl
-apt-get -y install qemu
 apt-get -y install ninja-build
 apt-get -y install can-utils
 apt-get -y install lsb-release
 apt-get -y install wget
 apt-get -y install gnupg
 apt-get -y install vim
+apt-get -y install g++-7
 apt-get -y install g++-10
 apt-get -y install g++-11
 apt-get -y install g++-12