Using tini for init on backend

Makefile

@@ -1,6 +1,6 @@
 REGISTRY_NAME=registry.runcible.io
 FRONTEND_IMAGE_NAME=$(REGISTRY_NAME)/demo-helm-frontend
-FRONTEND_IMAGE_VERSION=1.1.0
+FRONTEND_IMAGE_VERSION=1.1.0-dev
 BACKEND_IMAGE_NAME=$(REGISTRY_NAME)/demo-helm-backend
 BACKEND_IMAGE_VERSION=1.1.0-dev
 

backend/Dockerfile

@@ -1,6 +1,8 @@
 # Base Image
 FROM python:3.10.0-buster
 
+RUN apt-get update && apt-get install -y tini
+
 ENV APP_HOME=/opt/app
 
 # Create directory for the app
@@ -16,7 +18,7 @@ COPY requirements.txt .
 RUN pip install --no-cache -r requirements.txt
 
 # Install app
-COPY app.py settings.py ./
+COPY src/* ./
 
 # Chown all the files to the app user
 RUN chown -R app:app $APP_HOME
@@ -24,4 +26,6 @@ RUN chown -R app:app $APP_HOME
 # Change to the app user
 USER app
 
-CMD gunicorn --log-level=debug -b 0.0.0.0:5000 app:app
+ENTRYPOINT ["/usr/bin/tini", "--"]
+
+CMD ["gunicorn", "--log-level=debug", "-b", "0.0.0.0:5000", "app:app"]

backend/src/entrypoint.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+# tell tini that it's a subreaper if we're exec'ing in
+if [ "$$" -ne 1 ]; then
+    export TINI_SUBREAPER=true
+fi
+
+#  -g: Send signals to the child's process group.
+exec tini -g -- "$@"