Update healthcheck.

Dockerfile

@@ -45,12 +45,12 @@ EXPOSE 80
 # Install curl, collect static assets, compress static assets
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked --mount=type=cache,target=/var/lib/apt,sharing=locked \
     apt-get update --fix-missing && \
-    apt-get install --no-install-recommends -y wget curl && \
+    apt-get install --no-install-recommends -y curl && \
     python app.py collectstatic -v 2 --noinput && \
     python app.py compress
 
-HEALTHCHECK --interval=1m --timeout=10s --start-period=30s --retries=3 \
-  CMD curl -f http://0.0.0.0:80 || exit 1
+HEALTHCHECK --interval=1m --timeout=10s --start-period=5s --retries=3 \
+  CMD curl -f http://0.0.0.0:80/static/svg/github.svg || exit 1
 
 # Run gunicorn
 CMD ["gunicorn", "app:wsgi", "--config=gunicorn.conf.py"]