separate Docker setup and workflow for lab4

.github/workflows/lad4.yml

@@ -0,0 +1,23 @@
+name: Lab 4 Build and Test
+
+on:
+  push:
+    paths:
+      - 'lab4/**'
+  pull_request:
+    paths:
+      - 'lab4/**'
+
+jobs:
+  build_and_test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Build Docker image for Lab 4
+        run: docker build ./lab4 -t lab4-application
+
+      - name: Run Docker container
+        run: docker run --rm lab4-application 

Dockerfile

@@ -12,17 +12,10 @@ COPY requirements.txt /app/
 
 RUN pip install --no-cache-dir -r requirements.txt
 
-COPY lab4/include /app/lab4/include
-COPY lab4/src /app/lab4/src
-COPY lab4/tests /app/lab4/tests
-COPY lab4/Makefile /app/lab4/
-
 COPY lab1 /app/lab1
 COPY lab2 /app/lab2
 COPY lab3 /app/lab3
 
-RUN cd /app/lab4 && make all
-
 ENV NAME World
 
-CMD ["python3", "-m", "unittest", "discover", "-s", "/app/lab1", "-p", "test_*.py"]
+CMD ["python3", "-m", "unittest", "discover", "-s", "/app/lab1", "-p", "test_*.py"] 

lab4/Dockerfile

@@ -0,0 +1,14 @@
+FROM ubuntu:latest
+
+RUN apt-get update && apt-get install -y gcc make
+
+WORKDIR /lab4
+
+COPY src /lab4/src
+COPY include /lab4/include
+COPY tests /lab4/tests
+COPY Makefile /lab4/
+
+RUN make all
+
+CMD ["./test"]