update for docker

.github/workflows/build-on-pr.yaml

@@ -0,0 +1,23 @@
+name: Build on PR
+
+on:
+  pull_request:
+    branches: [ master, develop ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    steps:
+
+      - name: Checkout the project
+        uses: actions/checkout@master
+
+      - name: Install dependancies
+        run: |
+          echo "starting docker build"
+          cd repo_pkg
+          docker build -t parallel-test .
+          docker run parallel-test

repo_pkg/Dockerfile

@@ -1,2 +1,9 @@
-FROM alpine
-CMD ["echo", "Hello StackOverflow!"]
+FROM python
+
+WORKDIR /app
+COPY *.py /app/
+
+COPY requirements.txt /app/
+RUN pip install -r /app/requirements.txt
+
+CMD [ "python3", "parallel_example.py"]

repo_pkg/parallel_example.py

@@ -0,0 +1,27 @@
+import time
+from datetime import datetime
+
+from joblib import Parallel, delayed
+import multiprocessing
+
+# what are your inputs, and what operation do you want to
+# perform on each input. For example...
+
+print(datetime.now())
+
+inputs = range(15)
+def processInput(i):
+    print("sleeping function START")
+    time.sleep(5)
+    print("sleeping function FINISHED")
+    return i * i
+
+num_cores = multiprocessing.cpu_count()
+
+print(num_cores)
+
+results = Parallel(n_jobs=num_cores)(delayed(processInput)(i) for i in inputs)
+
+print(results)
+
+print(datetime.now())

repo_pkg/requirements.txt

@@ -0,0 +1 @@
+joblib

repo_pkg/test_five.py

@@ -0,0 +1,7 @@
+import time
+
+def sleep_and_print_five():
+
+    time.sleep(5)
+
+    print("Finished process 5")