diff --git a/docker/Dockerfile.coverage b/docker/Dockerfile.coverage
index 4260503..a92e627 100644
--- a/docker/Dockerfile.coverage
+++ b/docker/Dockerfile.coverage
@@ -11,19 +11,18 @@ WORKDIR /app/
 # Copy the modified SAMURAI source code from a particular PR
 COPY . /app/samurai
 
-# Build SAMURAI with coverage and debug mode
+# Build with reduced iteration numbers to save execution time, since we are using debug mode
 RUN cd samurai && \
-    export SAMURAI_ROOT=$(pwd) && \
+    sed -i 's|set(SOLVER_MAXITER 2000)|set(SOLVER_MAXITER 1)|g' CMakeLists.txt && \
+	sed -i 's|set(SOLVER_INNER_MAXITER 4000)|set(SOLVER_INNER_MAXITER 20)|g' CMakeLists.txt && \
+	export SAMURAI_ROOT=$(pwd) && \
     export LROSE_INSTALL_DIR=/usr/local && \
     mkdir build && \
     cd build && \
-    cmake -DUSE_GPU=false -DDEBUG_COMPILE=true -D ENABLE_COVERAGE=ON .. && \
+    cmake -DUSE_GPU=false -DDEBUG_COMPILE=false -D ENABLE_COVERAGE=ON .. && \
     make -j 8 VERBOSE=1
 
+# Update input data directory inside the container
 RUN sed -i 's|data_directory = "/glade/campaign/cisl/asap/samurai/data/beltrami";|data_directory = "/app/data/beltrami";|g' /app/samurai/ncar_scripts/TDRP/beltrami.tdrp
 
-ENV PATH="/app/samurai/build:${PATH}"
-ENV LD_LIBRARY_PATH="/usr/local/lib:${LD_LIBRARY_PATH}"
-ENV PATH="/usr/local/bin:${PATH}"
-
 WORKDIR /app/samurai/build
\ No newline at end of file