perf: updated Dockerfile to optimize requirements installation and de…

…pendency caching

.github/workflows/push-program-intent-engagement-image.yaml

@@ -9,6 +9,11 @@ on:
   schedule:
     - cron: "0 4 * * 1-5"  # UTC Time
 
+#  Added for testing purposes. Will remove once the PR is finalised
+  pull_request:
+    branches:
+      - '**'
+
 jobs:
   build-and-push-image:
     runs-on: ubuntu-latest
@@ -43,7 +48,6 @@ jobs:
           push: true
           target: app
           tags: edxops/program-intent-engagement-dev:${{ steps.get-tag-name.outputs.result }}
-          platforms: linux/amd64,linux/arm64
 
       - name: Send failure notification
         if: failure()

dockerfiles/program-intent-engagement.Dockerfile

@@ -75,21 +75,24 @@ ENV DJANGO_SETTINGS_MODULE program_intent_engagement.settings.production
 EXPOSE 18781
 RUN useradd -m --shell /bin/false app
 
-WORKDIR /edx/app/program-intent-engagement
+# Create required directories for requirements
+RUN mkdir -p requirements
 
-# cloning git repo
-RUN curl -L https://github.com/edx/program-intent-engagement/archive/refs/heads/main.tar.gz | tar -xz --strip-components=1
+WORKDIR /edx/app/program-intent-engagement
 
 ARG INTENT_MANAGEMENT_VENV_DIR="/edx/app/venvs/program-intent-management"
 RUN virtualenv -p python${PYTHON_VERSION} --always-copy ${INTENT_MANAGEMENT_VENV_DIR}
 
 # Dependencies are installed as root so they cannot be modified by the application user.
-RUN pip install -r requirements/production.txt
+RUN curl -L -o requirements/production.txt https://raw.githubusercontent.com/edx/program-intent-engagement/main/requirements/production.txt
+RUN pip install --no-cache-dir -r requirements/production.txt
 
 RUN mkdir -p /edx/var/log
 
+# Clone the repository
+RUN curl -L https://github.com/edx/program-intent-engagement/archive/refs/heads/main.tar.gz | tar -xz --strip-components=1
+
 # Code is owned by root so it cannot be modified by the application user.
-# So we copy it before changing users.
 USER app
 
 # Gunicorn 19 does not log to stdout or stderr by default. Once we are past gunicorn 19, the logging to STDOUT need not be specified.