install curl for checking if webserver is ready.

docker/Dockerfile

@@ -34,7 +34,7 @@ ENV PATH="/scrutiny/bin:${PATH}"
 ADD https://github.com/dshearer/jobber/releases/download/v1.4.4/jobber_1.4.4-1_amd64.deb /tmp/
 RUN apt install /tmp/jobber_1.4.4-1_amd64.deb
 
-RUN apt-get update && apt-get install -y smartmontools=7.0-0ubuntu1~ubuntu18.04.1 ca-certificates  && update-ca-certificates
+RUN apt-get update && apt-get install -y smartmontools=7.0-0ubuntu1~ubuntu18.04.1 ca-certificates curl && update-ca-certificates
 
 ADD https://github.com/just-containers/s6-overlay/releases/download/v1.21.8.0/s6-overlay-amd64.tar.gz /tmp/
 RUN tar xzf /tmp/s6-overlay-amd64.tar.gz -C /