.destroy() to prevent memory leak and docker compose addition

Dockerfile

@@ -2,10 +2,10 @@
 FROM dolfinx/dolfinx:v0.7.3
 
 # Set work directory
-RUN mkdir -p /home/app
-WORKDIR /home/app
+RUN mkdir -p /home/mdfenicsx
+WORKDIR /home/mdfenicsx
 
-# Install MDFEniCSx
+# Install MDFEniCSx from github
 RUN pip install git+https://github.com/niravshah241/MDFEniCSx.git
 
 # Keep container alive

docker-compose.yaml

@@ -0,0 +1,8 @@
+services:
+  mdfenicsx:
+    image: mdfenicsx:no-tag
+    build: 
+      context: .
+      dockerfile: Dockerfile
+      tags:
+        - "mdfenicsx:no-tag"

mdfenicsx/mesh_motion_classes.py

@@ -109,6 +109,7 @@ def solve(self):
         ksp.getPC().setFactorSolverType("mumps")
         ksp.setFromOptions()
         ksp.solve(F, uh.vector)
+        # .destroy() objects which are no longer needed
         ksp.destroy()
         A.destroy()
         F.destroy()