feat(dev): add less

Requested by @mcrosson.

See: zmkfirmware/zmk-docker#1
PR: zmkfirmware/zmk-docker#52

.github/workflows/containers.yml

@@ -396,6 +396,8 @@ jobs:
       - run: sleep 5
       - name: Test docs wget (webpack)
         run: wget http://localhost:3000
+      - name: Test less
+        run: less --version
       - name: Test ssh
         run: ssh -V
       - name: Stop container

Dockerfile

@@ -51,6 +51,7 @@ RUN \
   g++-multilib \
   gpg \
   gpg-agent \
+  less \
   libsdl2-dev \
   locales \
   nano \