Fix release builds: add matplotlib for PyInstaller, fix Dockerfile deps

- Install matplotlib in CI builds (required by astropy during PyInstaller analysis)
- Replace libgl1-mesa-glx with libgl1 in Dockerfile (Debian Bookworm compat)

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: samantaba

.github/workflows/release.yml

@@ -61,7 +61,7 @@ jobs:
         run: |
           pip install --upgrade pip
           pip install -r requirements.txt
-          pip install pyinstaller
+          pip install pyinstaller matplotlib
 
       - name: Build macOS app
         run: python build/build.py
@@ -106,7 +106,7 @@ jobs:
         run: |
           pip install --upgrade pip
           pip install -r requirements.txt
-          pip install pyinstaller
+          pip install pyinstaller matplotlib
 
       - name: Build Linux binary
         run: python build/build.py
@@ -145,7 +145,7 @@ jobs:
         run: |
           pip install --upgrade pip
           pip install -r requirements.txt
-          pip install pyinstaller
+          pip install pyinstaller matplotlib
 
       - name: Build Windows exe
         run: python build/build.py

Dockerfile

@@ -9,7 +9,7 @@ WORKDIR /app
 # Install system dependencies (OpenCV, GL for image processing)
 RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
-    libgl1-mesa-glx \
+    libgl1 \
     libglib2.0-0 \
     && rm -rf /var/lib/apt/lists/*