Retry creation of sandbox container (#276)

* Extend sleep when Docker daemon seems ready

* Pruning test shall not write to local fs

* Make sure container names do not conflict

test/pruning/docker-compose.yml

@@ -35,7 +35,7 @@ services:
     volumes:
       - app_data:/backup/app_data:ro
       - /var/run/docker.sock:/var/run/docker.sock
-      - ./local:/archive
+      - ${LOCAL_DIR:-./local}:/archive
 
   offen:
     image: offen/offen:latest

test/pruning/run.sh

@@ -9,7 +9,7 @@ cd "$(dirname "$0")"
 . ../util.sh
 current_test=$(basename $(pwd))
 
-mkdir -p local
+export LOCAL_DIR=$(mktemp -d)
 
 docker compose up -d --quiet-pull
 sleep 5
@@ -20,7 +20,7 @@ sleep 5
 
 expect_running_containers "3"
 
-touch -r ./local/test-hostnametoken.tar.gz -d "14 days ago" ./local/test-hostnametoken-old.tar.gz
+touch -r "$LOCAL_DIR/test-hostnametoken.tar.gz" -d "14 days ago" "$LOCAL_DIR/test-hostnametoken-old.tar.gz"
 
 docker run --rm \
   -v minio_backup_data:/minio_data \
@@ -36,7 +36,9 @@ info "Create backup with no prune for s3 backend"
 docker compose exec backup backup
 
 info "Check if old backup has been pruned (local)"
-test ! -f ./local/test-hostnametoken-old.tar.gz
+if [ -f "$LOCAL_DIR/test-hostnametoken-old.tar.gz" ]; then
+  fail "Expired backup was not pruned from local storage."
+fi
 
 info "Check if old backup has NOT been pruned (s3)"
 docker run --rm \
@@ -48,7 +50,7 @@ pass "Old remote backup has been pruned locally, skipped S3 backend is untouched
 
 # Skip local and s3 backend from prune (all backends)
 
-touch -r ./local/test-hostnametoken.tar.gz -d "14 days ago" ./local/test-hostnametoken-old.tar.gz
+touch -r "$LOCAL_DIR/test-hostnametoken.tar.gz" -d "14 days ago" "$LOCAL_DIR/test-hostnametoken-old.tar.gz"
 
 docker compose up -d
 sleep 5
@@ -57,7 +59,7 @@ info "Create backup with no prune for both backends"
 docker compose exec -e BACKUP_SKIP_BACKENDS_FROM_PRUNE="s3,local" backup backup
 
 info "Check if old backup has NOT been pruned (local)"
-if [ ! -f ./local/test-hostnametoken-old.tar.gz ]; then
+if [ ! -f "$LOCAL_DIR/test-hostnametoken-old.tar.gz" ]; then
   fail "Backdated file has not been deleted"
 fi
 

test/test.sh

@@ -55,10 +55,21 @@ for dir in $(find $find_args | sort); do
 
   docker run $docker_run_args offen/docker-volume-backup:test-sandbox
 
+  retry_counter=0
   until docker exec $sandbox /bin/sh -c 'docker info' > /dev/null 2>&1; do
+    if [ $retry_counter -gt 20 ]; then
+      echo "Gave up waiting for Docker daemon to become ready after 20 attempts"
+      exit 1
+    fi
+
+    if [ "$(docker inspect $sandbox --format '{{ .State.Running }}')" = "false" ]; then
+      docker rm $sandbox
+      docker run $docker_run_args offen/docker-volume-backup:test-sandbox
+    fi
+
     sleep 0.5
+    retry_counter=$((retry_counter+1))
   done
-  sleep 0.5
 
   docker exec $sandbox /bin/sh -c "docker load -i /cache/image.tar.gz"
   docker exec -e TEST_VERSION=$IMAGE_TAG $sandbox /bin/sh -c "/code/test/$test"