Update workflow

Signed-off-by: Alberto Tudela <ajtudela@gmail.com>

.github/workflows/build.yml

@@ -9,18 +9,25 @@ on:
       - main
   pull_request:
 
+env:
+  CORTEX_PATH: ${{ github.workspace }}/cortex
+
 jobs:
   build:
     runs-on: ubuntu-22.04
-    container:
-      image: grupoavispa/cortex:development-ros-latest
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4.1.6
       - name: Setup ROS 2
         uses: ros-tooling/setup-ros@0.7.5
         with:
           required-ros-distributions: humble
+      - name: Install Cortex
+        run: |
+          cd $CORTEX_PATH
+          curl -o https://raw.githubusercontent.com/grupo-avispa/cortex/development/installation.sh
+          chmod +x dependencies.sh
+          ./installation.sh
       - name: Install dependencies
         uses: ros-tooling/action-ros-ci@0.3.13
         with: