try building ceres-solver v2.2

Dockerfile

@@ -21,11 +21,24 @@ RUN apt update && apt install -y \
     libgtest-dev \
     libabsl-dev \
     libeigen3-dev \
-    libceres-dev=2.2.0+dfsg-4.1ubuntu2
 
 # Set the working directory
 WORKDIR /app_lib/so3g
 
+# Fetch and install ceres-solver
+RUN git clone --depth 1 --branch 2.2.0 --recurse-submodules https://github.com/ceres-solver/ceres-solver
+
+WORKDIR /app_lib/so3g/ceres-solver
+
+RUN mkdir build \
+    && cd build \
+    && cmake .. \
+    && make -j$(nproc) \
+    && make install
+
+# Set the working directory back to so3g
+WORKDIR /app_lib/so3g
+
 # Copy the current directory contents into the container
 ADD . /app_lib/so3g