diff --git a/.github/workflows/build_ubuntu.yml b/.github/workflows/build_ubuntu.yml
index 902bbbf97..36d4eada8 100644
--- a/.github/workflows/build_ubuntu.yml
+++ b/.github/workflows/build_ubuntu.yml
@@ -23,8 +23,8 @@ jobs:
         os: [ ubuntu-20.04 ]
         xprs: [
           #{ value: XPRESS-ON, ref: 8.13a },
-                { value: XPRESS-ON, ref: 9.2.5 },
-          #        { value: XPRESS-OFF }
+          { value: XPRESS-ON, ref: 9.2.5 },
+          #       { value: XPRESS-OFF }
         ]
     env:
       XPRESSDIR: ${{ github.workspace }}/xpress
@@ -36,106 +36,7 @@ jobs:
         with:
           submodules: true
 
-      - name: Checkout xpressmp linux
-        if: matrix.xprs.value == 'XPRESS-ON'
-        uses: actions/checkout@v4
-        with:
-          repository: rte-france/xpress-mp
-          path: ${{ env.XPRESSDIR }}
-          ref: ${{ matrix.xprs.ref}}
-          token: ${{ secrets.AS_TOKEN }} #reniew token periodically
-
-      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.3
-        with:
-          key: ${{ matrix.os }}-${{ matrix.xprs.value }}
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          cache: 'pip'
-          python-version: 3.8
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements-tests.txt
-          pip install -r requirements-ui.txt
-
-      - name: Install mandatory system libraries
-        run: |
-          sudo apt-get update --fix-missing
-          sudo apt-get install -y ccache cmake libgtest-dev libjsoncpp-dev libtbb-dev libopenmpi-dev
-          sudo apt-get install -y g++-10 gcc-10
-
-      - name: Update alternatives
-        #mpicxx  uses "g++" so we need g++ to be symbolic link to g++-10
-        run: |
-          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 10
-          sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 10
-          sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc 30
-          sudo update-alternatives --set cc /usr/bin/gcc
-          sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++ 30
-          sudo update-alternatives --set c++ /usr/bin/g++
-
-      - name: Read antares-solver version
-        id: antares-version
-        uses: ./.github/actions/read-json-value
-        with:
-          path: 'antares-version.json'
-          key: 'antares_version'
-
-      - name: Read antares-xpansion version
-        id: antares-xpansion-version
-        uses: ./.github/actions/read-json-value
-        with:
-          path: 'antares-version.json'
-          key: 'antares_xpansion_version'
-
-      - name: Read antares-deps version
-        id: antares-deps-version
-        uses: ./.github/actions/read-json-value
-        with:
-          path: 'antares-version.json'
-          key: 'antares_deps_version'
-
-      - name: Download pre-compiled librairies
-        uses: ./.github/workflows/download-extract-precompiled-libraries-tgz
-        with:
-          antares-deps-version: ${{steps.antares-deps-version.outputs.result}}
-          antares-version: ${{steps.antares-version.outputs.result}}
-          os: ${{matrix.os}}
-          os-full-name: Ubuntu-20.04
-
-      - name: Compile Boost
-        uses: ./.github/workflows/compile-boost
-        with:
-          prefix: "../rte-antares-deps-Release/"
-          load-toolset: 'false'
-
-      - name: Configure
-        shell: bash
-        #XPRESS_VALUE = ${{ matrix.xprs }} == "XPRESS-ON" ? "ON" : "OFF"
-        run: |
-          [[ ${{ matrix.xprs.value }} == "XPRESS-ON" ]] && XPRESS_VALUE="ON" || XPRESS_VALUE="OFF" 
-          cmake -B _build -S . \
-                -DCMAKE_C_COMPILER_LAUNCHER=ccache \
-                -DCMAKE_C_COMPILER=/usr/bin/gcc-10 \
-                -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
-                -DCMAKE_CXX_COMPILER=/usr/bin/g++-10 \
-                -DDEPS_INSTALL_DIR=rte-antares-deps-Release \
-                -DBUILD_TESTING=ON \
-                -DCMAKE_BUILD_TYPE=Release \
-                -DCMAKE_INSTALL_PREFIX=_install \
-                -DBUILD_UI=ON  \
-                -DXPRESS=${{ env.XPRESS_VALUE }} \
-                -DXPRESS_ROOT=${{ env.XPRESSDIR }}
-
-      - name: Build
-        run: |
-          cmake --build _build --config Release -j8
-
-      - name: Test
-        run: |
-          cd _build
-          ctest -C Release --output-on-failure -L "medium|unit|benders|lpnamer"
+      - name: Dump GitHub context
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+        run: echo "$GITHUB_CONTEXT"