Merge pull request #1596 from erikh/docker-image-fixes

Fix dockerfile & entrypoint:

Dockerfile.release

@@ -11,6 +11,8 @@ RUN curl -sSL -o zerotier-one.deb "${PACKAGE_BASEURL}/zerotier-one_${VERSION}_${
 
 FROM debian:buster
 
+RUN apt-get update -qq && apt-get install openssl libssl1.1 -y
+
 COPY --from=stage zerotier-one.deb .
 
 RUN dpkg -i zerotier-one.deb && rm -f zerotier-one.deb
@@ -20,5 +22,7 @@ RUN rm -rf /var/lib/zerotier-one
 COPY entrypoint.sh.release /entrypoint.sh
 RUN chmod 755 /entrypoint.sh
 
+HEALTHCHECK --interval=1s CMD bash /healthcheck.sh
+
 CMD []
 ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh.release

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 grepzt() {
-  [ ! -n "$(cat /var/lib/zerotier-one/zerotier-one.pid)" -a -d "/proc/$(cat /var/lib/zerotier-one/zerotier-one.pid)" ]
+  [ -f /var/lib/zerotier-one/zerotier-one.pid -a -n "$(cat /var/lib/zerotier-one/zerotier-one.pid)" -a -d "/proc/$(cat /var/lib/zerotier-one/zerotier-one.pid)" ]
   return $?
 }
 
@@ -40,26 +40,45 @@ killzerotier() {
 
 trap killzerotier INT TERM
 
+echo "Configuring networks to join"
+mkdir -p /var/lib/zerotier-one/networks.d
+
+echo "joining networks: $@"
+for i in "$@"
+do
+  echo "Configuring join for $i"
+  touch "/var/lib/zerotier-one/networks.d/${i}.conf"
+done
+
 echo "starting zerotier"
 nohup /usr/sbin/zerotier-one &
 
 while ! grepzt
 do
   echo "zerotier hasn't started, waiting a second"
+
+  if [ -f nohup.out ]
+  then
+    tail -n 10 nohup.out
+  fi
+
   sleep 1
 done
 
-echo "joining networks: $@"
+echo "Writing healthcheck for networks: $@"
 
-for i in "$@"
+cat >/healthcheck.sh <<EOF
+#!/bin/bash
+for i in $@
 do
-  echo "joining $i"
-
-  while ! zerotier-cli join "$i"
-  do 
-    echo "joining $i failed; trying again in 1s"
-    sleep 1
-  done
+  [ "\$(zerotier-cli get \$i status)" = "OK" ] || exit 1
 done
+EOF
+
+chmod +x /healthcheck.sh
 
-sleep infinity
+echo "Sleeping infinitely"
+while true
+do
+  sleep 1
+done