fix: install docker-compose-plugin in ci

This used to be installed as moby-compose in Github Runners but they switched to the docker apt repo and don't install the plugin from the apt repository as it is outdated so we have to do it ourselves.

.github/workflows/ci.yml

@@ -14,6 +14,9 @@ concurrency:
   group: build-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
+env:
+  INSTALL_DOCKER_REPO: 1
+
 jobs:
   check-commit:
     runs-on: ubuntu-20.04
@@ -138,7 +141,7 @@ jobs:
       #   uses: luchihoratiu/debug-via-ssh@main
       #   with:
       #     NGROK_AUTH_TOKEN: ${{ secrets.NGROK_AUTH_TOKEN }}
-      #     SSH_PASS: ${{ secrets.SSH_PASS }}
+      #     SSH_PASS: ${{ secrets.NGROK_SSH_PASS }}
 
       - name: run ci
         timeout-minutes: 30

tests.mk

@@ -42,7 +42,15 @@ else
 endif
 endif
 
-ci-dependencies: bats shellcheck xmlstarlet
+ci-dependencies: bats shellcheck xmlstarlet docker-compose-apt-repo
+
+docker-compose-apt-repo:
+ifdef INSTALL_DOCKER_REPO
+	curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor --yes -o /usr/share/keyrings/docker.gpg
+	echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(shell . /etc/os-release && echo "$$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list
+	sudo apt update
+	sudo apt-get -qq -y --no-install-recommends install docker-compose-plugin
+endif
 
 setup-deploy-tests:
 ifdef ENABLE_DOKKU_TRACE