Fixes #468: cron (virus wiper) (#469)

* Fixes #468: cron (virus wiper)

Dockerfile

@@ -74,7 +74,7 @@ RUN sed -i -r 's/^(CRON)=0/\1=1/g' /etc/default/spamassassin
 RUN sed -i -r 's/#(@|   \\%)bypass/\1bypass/g' /etc/amavis/conf.d/15-content_filter_mode
 RUN adduser clamav amavis && adduser amavis clamav
 RUN useradd -u 5000 -d /home/docker -s /bin/bash -p $(echo docker | openssl passwd -1 -stdin) docker
-RUN (echo "0 4 * * * find /var/lib/amavis/virusmails/ -type f -mtime +\$VIRUSMAILS_DELETE_DELAY -delete" ; crontab -l) | crontab -
+RUN (echo "0 4 * * * /usr/local/bin/virus-wiper" ; crontab -l) | crontab -
 
 # Configure Fail2ban
 COPY target/fail2ban/jail.conf /etc/fail2ban/jail.conf

target/bin/virus-wiper

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+echo "Wipping virus older than $VIRUSMAILS_DELETE_DELAY days"
+find /var/lib/amavis/virusmails/ -type f -mtime +$VIRUSMAILS_DELETE_DELAY -delete

test/tests.bats

@@ -567,7 +567,7 @@ load 'test_helper/bats-assert/load'
 }
 
 @test "checking amavis: virusmail wiper cron exists" {
-  run docker exec mail bash -c "crontab -l | grep '/var/lib/amavis/virusmails/'"
+  run docker exec mail bash -c "crontab -l | grep '/usr/local/bin/virus-wiper'"
   assert_success
 }
 
@@ -578,7 +578,7 @@ load 'test_helper/bats-assert/load'
 
 @test "checking amavis: old virusmail is wipped by cron" {
   docker exec mail bash -c 'touch -d "`date --date=2000-01-01`" /var/lib/amavis/virusmails/should-be-deleted'
-  run docker exec -ti mail bash -c 'find /var/lib/amavis/virusmails/ -type f -mtime +$VIRUSMAILS_DELETE_DELAY -delete'
+  run docker exec -ti mail bash -c '/usr/local/bin/virus-wiper'
   assert_success
   run docker exec mail bash -c 'ls -la /var/lib/amavis/virusmails/ | grep should-be-deleted'
   assert_failure
@@ -586,7 +586,7 @@ load 'test_helper/bats-assert/load'
 
 @test "checking amavis: recent virusmail is not wipped by cron" {
   docker exec mail bash -c 'touch -d "`date`"  /var/lib/amavis/virusmails/should-not-be-deleted'
-  run docker exec -ti mail bash -c 'find /var/lib/amavis/virusmails/ -type f -mtime +$VIRUSMAILS_DELETE_DELAY -delete'
+  run docker exec -ti mail bash -c '/usr/local/bin/virus-wiper'
   assert_success
   run docker exec mail bash -c 'ls -la /var/lib/amavis/virusmails/ | grep should-not-be-deleted'
   assert_success