add docker health checks

.gitignore

@@ -0,0 +1 @@
+.env

Justfile

@@ -0,0 +1,8 @@
+run *ARGS: build
+	docker compose up {{ARGS}}
+
+stop:
+	docker compose down
+
+build:
+	docker compose build

backend/.gitignore

@@ -1 +1,2 @@
 target/
+vendor/busybox_WGET

backend/Dockerfile

@@ -21,7 +21,10 @@ RUN --mount=type=cache,target=/usr/local/cargo/registry \
     cargo build --release --bin nuchat --target-dir=/app/target
 
 FROM gcr.io/distroless/cc AS runtime
-WORKDIR /app
-COPY --from=builder /app/target/release/nuchat ./nuchat
 
-ENTRYPOINT [ "./nuchat", "--host 0.0.0.0" ]
+ADD --chmod=a+x vendor/busybox_WGET /usr/bin/wget
+COPY --from=builder /app/target/release/nuchat /usr/bin/
+
+# HEALTHCHECK --interval=5s --retries=1 --timeout=5s CMD ["wget", "-q", "--spider", "http://localhost:7000/healthcheck
+
+ENTRYPOINT [ "nuchat", "--host", "0.0.0.0" ]

docker-compose.yml

@@ -3,10 +3,28 @@ services:
     build: ./ui
     ports:
       - "3000:3000"
+    depends_on:
+      backend:
+        condition: service_started
+    healthcheck:
+      test: ["CMD", "wget", "-q", "--spider", "http://0.0.0.0:3000"]
+      interval: 1s
+      retries: 3
+      timeout: 5s
+
   backend:
     build: ./backend
     ports:
       - "7000:7000"
+    depends_on:
+      db:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "wget", "-q", "--spider", "http://localhost:7000/healthcheck"]
+      interval: 1s
+      retries: 3
+      timeout: 5s
+
   db:
     image: postgres:17-alpine
     restart: unless-stopped
@@ -14,8 +32,11 @@ services:
       - "5432:5432"
     environment:
       POSTGRES_DB: nuchat
-      POSTGRES_USER: postgres
-      POSTGRES_PASSWORD: postgres
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER} -d nuchat"]
+      interval: 1s
+      retries: 3
+      timeout: 5s
     volumes:
       - db-data:/var/lib/postgresql/data
 

ui/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:24-slim AS base
+FROM node:24-alpine AS base
 
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
@@ -24,8 +24,9 @@ FROM base AS runner
 COPY --from=prod /app/node_modules /app/node_modules
 COPY --from=build /app/build build/
 
-EXPOSE 3000
 
+ENV PORT=3000
 ENV NODE_ENV=production
+EXPOSE $PORT
 
 CMD ["node", "build"]