Remove s6 service timeout

docker/Dockerfile

@@ -10,9 +10,13 @@ ARG BUILD_VERSION
 ARG BUILD_COMMIT
 ARG BUILD_DATE
 
+# See: https://github.com/just-containers/s6-overlay/blob/master/README.md
 ENV SUPPRESS_NO_CONFIG_WARNING=1 \
-	S6_FIX_ATTRS_HIDDEN=1 \
 	S6_BEHAVIOUR_IF_STAGE2_FAILS=1 \
+	S6_CMD_WAIT_FOR_SERVICES_MAXTIME=0 \
+	S6_FIX_ATTRS_HIDDEN=1 \
+	S6_KILL_FINISH_MAXTIME=10000 \
+	S6_VERBOSITY=1 \
 	NODE_ENV=production \
 	NPM_BUILD_VERSION="${BUILD_VERSION}" \
 	NPM_BUILD_COMMIT="${BUILD_COMMIT}" \