diff --git a/AGENTS.md b/AGENTS.md
index 0c9eca0..df4be1e 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -5,13 +5,18 @@ SPDX-License-Identifier: MIT
 
 # AGENTS.md for SimiLie
 
+<!-- Example usage: "run tests" -->
+
 # Clone
 - Clone with `git clone --recurse-submodules git@github.com:blegouix/similie.git` or any similar commande which suits the network configuration. Be sure to pull the submodules recursively.
 
 # Build environment
-- **Requirement:** Build and use the `docker/similie/Dockerfile` image before compiling or running tests. Do not build on the host directly. If `docker` is not installed, install it first (refer to the online documentation).
-- Configure `CMake` for CPU with `cmake -DCMAKE_CXX_COMPILER=g++-13 -DCMAKE_BUILD_TYPE=Debug -DKokkos_ENABLE_OPENMP=ON -B build -S .` or for CUDA with `cmake -DCMAKE_CXX_COMPILER=$PWD/vendor/ddc/vendor/kokkos/bin/nvcc_wrapper -DCMAKE_BUILD_TYPE=Debug -DKokkos_ENABLE_CUDA=ON -DKokkos_ARCH_<YOUR_ARCH_NAMECODE>=ON -B build -S .`. Of course replace `<YOUR_ARCH_NAMECODE>` with the arch namecode which suits the GPU.
-- Compile as usual once configured (`make -jN_PROC` from `build`).
+- **Requirement:** By default (no particular contradictory instructions), build and run in the `docker/similie_env/Dockerfile` image that you call `similie_env:latest`. You'll need to mount the `similie/` folder before compiling it. Compile directly in the host environment only if specifically asked for (if so, check if all the necessary dependencies listed in `docker/similie_env/Dockerfile` are available in the current environment, in particular `nvcc` and `openmpi`).
+- **Mount path in Docker:** If you reuse an existing `build/` or `build_cpu/` directory from the host, mount the repository in Docker at the same absolute path as on the host. Otherwise CMake may fail because the cached source/build paths no longer match.
+- **CUDA in Docker:** When building or running the CUDA backend inside Docker, start the container with `--gpus all` so the NVIDIA driver and GPU devices are exposed in the container.
+- **Git safe.directory in Docker:** Some vendored submodules query Git metadata during CMake. If Docker reports "detected dubious ownership" on the mounted repository or its submodules, add temporary `git config --global --add safe.directory <path>` entries inside the container for the repository and the relevant submodules before building.
+- **Configure CMake:** For CPU with `cmake -DCMAKE_CXX_COMPILER=g++-13 -DCMAKE_BUILD_TYPE=Debug -DKokkos_ENABLE_OPENMP=ON -B build -S .` or for CUDA with `cmake -DCMAKE_CXX_COMPILER=$PWD/vendor/ddc/vendor/kokkos/bin/nvcc_wrapper -DCMAKE_BUILD_TYPE=Debug -DKokkos_ENABLE_CUDA=ON -DKokkos_ARCH_<YOUR_ARCH_NAMECODE>=ON -B build -S .`. Of course replace `<YOUR_ARCH_NAMECODE>` with the arch namecode which suits the GPU.
+- **Compile:** As usual once configured (`make -jN_PROC` from the `build/` folder). Never exceed N_PROC=8. Be sure to compile in the `build/` for CUDA backend and `build_cpu/` for CPU backend.
 
 ## Run tests
-- From `build`, run `ctest`
+- From `build`, first recompile then run `ctest`.
diff --git a/docker/similie/Dockerfile b/docker/similie_env/Dockerfile
similarity index 87%
rename from docker/similie/Dockerfile
rename to docker/similie_env/Dockerfile
index 16e9cc5..d3bf694 100644
--- a/docker/similie/Dockerfile
+++ b/docker/similie_env/Dockerfile
@@ -1,4 +1,4 @@
-ARG BASE_IMAGE = nvidia/cuda:13.1.1-cudnn-devel-ubuntu24.04
+ARG BASE_IMAGE=nvidia/cuda:13.1.1-cudnn-devel-ubuntu24.04
 FROM $BASE_IMAGE
 
 # SPDX-FileCopyrightText: 2026 Baptiste Legouix
@@ -52,8 +52,13 @@ RUN apt install -y libfftw3-dev
 # LAPACKE
 RUN apt install -y liblapacke-dev
 
+# Thrust
+RUN if [ "${BACKEND}" = "cuda" ]; then \
+  apt install -y libthrust-dev; \
+fi
+
 # Ginkgo
-RUN git clone -b v1.8.0 --depth 1 https://github.com/ginkgo-project/ginkgo.git
+RUN git clone -b v1.11.0 --depth 1 https://github.com/ginkgo-project/ginkgo.git
 RUN if [ "${BACKEND}" = "cpu" ]; then \
       cmake -DCMAKE_BUILD_TYPE=Release \
             -DGINKGO_BUILD_OMP=ON \
@@ -66,8 +71,8 @@ RUN if [ "${BACKEND}" = "cpu" ]; then \
             -DCMAKE_CXX_COMPILER=g++ \
             -DCMAKE_CUDA_HOST_COMPILER=g++ \
             -DCMAKE_BUILD_TYPE=Release \
-            -DGINKGO_CUDA_ARCHITECTURES=70 \
             -DGINKGO_BUILD_CUDA=ON \
+            -DGINKGO_CUDA_ARCHITECTURES=89 \
             -DGINKGO_BUILD_TESTS=OFF \
             -DGINKGO_BUILD_EXAMPLES=OFF \
             -DGINKGO_BUILD_BENCHMARKS=OFF \
@@ -76,7 +81,7 @@ RUN if [ "${BACKEND}" = "cpu" ]; then \
       echo "ERROR: BACKEND must be 'cpu' or 'cuda' (got: '${BACKEND}')" >&2; \
       exit 1; \
     fi
-RUN cmake --build ginkgo/build -j 8
+RUN cmake --build ginkgo/build -j 4
 RUN cmake --install ginkgo/build
 
 # PDI 
@@ -91,3 +96,6 @@ EOF
 RUN wget -O /usr/share/keyrings/pdidev-archive-automatic.gpg https://repo.pdi.dev/ubuntu/pdidev-archive-keyring.gpg
 RUN apt update
 RUN apt install -y libpdi-dev pdiplugin-all
+
+# Sympy
+RUN apt install -y python3-sympy