Add possibility to import different dump of chains

- import dump only if `node` sub command passed
- ACC env variable default value is `6000-privnet-blocks.acc.gz`
- ACC env variable can be declared in `docker-compose`
- ACC env variable can be one of:
  - `/6000-privnet-blocks.acc.gz`
  - `/1600-privnet-blocks-single.acc.gz`
  - custom path to dump of blockchain

.docker/privnet-entrypoint.sh

@@ -1,6 +1,19 @@
 #!/bin/sh
-if test -f /privnet-blocks.acc.gz; then
-	gunzip /privnet-blocks.acc.gz
-	/usr/bin/neo-go db restore -i /privnet-blocks.acc
+
+BIN=/usr/bin/neo-go
+
+if [ -z "$ACC"]; then
+  ACC=/6000-privnet-blocks.acc.gz
 fi
-/usr/bin/neo-go "$@"
+
+case $@ in
+  "node"*)
+  echo "=> Try to restore blocks before running node"
+  if test -f $ACC; then
+    gunzip --stdout /$ACC > /privnet.acc
+    ${BIN} db restore -p --config-path /config -i /privnet.acc
+  fi
+    ;;
+esac
+
+${BIN} "$@"