implement healthcheck into Dockerfile (#1009)

Thanks @CosasDePuma

Dockerfile

@@ -15,6 +15,7 @@ RUN npm ci --omit=dev &&\
 # Copy build result to a new image.
 # This saves a lot of disk space.
 FROM docker.io/library/node:20-alpine
+HEALTHCHECK --interval=1m --timeout=5s --retries=3 CMD "/usr/bin/wg show | /bin/grep -q interface || exit 1"
 COPY --from=build_node_modules /app /app
 
 # Move node_modules one directory up, so during development

docker-compose.yml

@@ -42,8 +42,3 @@ services:
     sysctls:
       - net.ipv4.ip_forward=1
       - net.ipv4.conf.all.src_valid_mark=1
-    healthcheck:
-      test: /usr/bin/timeout 5s /bin/sh -c "/usr/bin/wg show | /bin/grep -q interface || exit 1"
-      interval: 1m
-      timeout: 5s
-      retries: 3