ci: Dockerfile and Docker Compose updates (#121)

backend/Dockerfile

@@ -1,15 +1,15 @@
-FROM node:18-bullseye-slim AS build
+FROM node:18-slim AS build
 
 # Install
 WORKDIR /app
 COPY *.json ./
 COPY ./src /app/src
-RUN npm ci --ignore-scripts
-RUN npm run build
+RUN npm ci --ignore-scripts && \
+    npm run build
 
 # Deployment container
 FROM gcr.io/distroless/nodejs:18
-ENV NODE_ENV production
+ENV NODE_ENV=production
 
 # Copy over app
 WORKDIR /app
@@ -21,7 +21,7 @@ EXPOSE 3000
 HEALTHCHECK --interval=30s --timeout=3s CMD curl -f http://localhost:3000/api || exit 1
 
 # Non-privileged user
-USER app
+USER 1001
 
 # Start up command with 50MB of heap size, each application needs to determine what is the best value. DONT use default as it is 4GB.
 CMD ["--max-old-space-size=50", "/app/dist/main"]

docker-compose.yml

@@ -1,22 +1,23 @@
----
-version: "3.8"
+# Reusable config
+x-common: &common
+  container_name: backend
+  ports: ["3000:3000"]
+  healthcheck:
+    test: [ "CMD", "curl", "-f", "http://localhost:3000/api" ]
+  working_dir: "/app"
 
 services:
-  backend:
+  # Local dev - docker compose up dev
+  dev:
+    profiles: ["dev"]
+    entrypoint: ["sh", "-c", "npm i && npm run start"]
+    image: node:18
+    volumes: ["./backend:/app:z", "/app/node_modules"]
+    <<: *common
+
+  # Container/deploy - docker compose up deploy
+  deploy:
+    profiles: ["deploy"]
     build:
       context: backend
-    container_name: backend
-    entrypoint:
-      - "sh"
-      - "-c"
-      - "npm i && npm run start"
-    hostname: backend
-    image: node:18
-    ports:
-      - "3000:3000"
-    volumes:
-      - ./backend:/app:z
-      - /app/node_modules
-    healthcheck:
-      test: [ "CMD", "curl", "-f", "http://localhost:3000/api" ]
-    working_dir: "/app"
+    <<: *common