diff --git a/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/receipt.ex b/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/receipt.ex
index c050776801..0a20f4ba5d 100644
--- a/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/receipt.ex
+++ b/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/receipt.ex
@@ -258,7 +258,14 @@ defmodule EthereumJSONRPC.Receipt do
 
   defp entry_to_elixir({key, quantity})
        when key in ~w(blockNumber cumulativeGasUsed gasUsed transactionIndex) do
-    {:ok, {key, quantity_to_integer(quantity)}}
+    result =
+      if is_nil(quantity) do
+        nil
+      else
+        quantity_to_integer(quantity)
+      end
+
+    {:ok, {key, result}}
   end
 
   defp entry_to_elixir({"logs" = key, logs}) do
diff --git a/apps/ethereum_jsonrpc/test/ethereum_jsonrpc/receipt_test.exs b/apps/ethereum_jsonrpc/test/ethereum_jsonrpc/receipt_test.exs
index 38f5fa7a7a..b5ee4ae2ef 100644
--- a/apps/ethereum_jsonrpc/test/ethereum_jsonrpc/receipt_test.exs
+++ b/apps/ethereum_jsonrpc/test/ethereum_jsonrpc/receipt_test.exs
@@ -30,4 +30,11 @@ defmodule EthereumJSONRPC.ReceiptTest do
       assert Receipt.to_elixir(%{"status" => nil, "transactionHash" => "0x0"}) == %{"transactionHash" => "0x0"}
     end
   end
+
+  test "leaves nil if blockNumber is nil" do
+    assert Receipt.to_elixir(%{"blockNumber" => nil, "transactionHash" => "0x0"}) == %{
+             "transactionHash" => "0x0",
+             "blockNumber" => nil
+           }
+  end
 end
diff --git a/apps/indexer/lib/indexer/block/realtime/consensus_ensurer.ex b/apps/indexer/lib/indexer/block/realtime/consensus_ensurer.ex
index a49a826a6b..363f54fbed 100644
--- a/apps/indexer/lib/indexer/block/realtime/consensus_ensurer.ex
+++ b/apps/indexer/lib/indexer/block/realtime/consensus_ensurer.ex
@@ -3,6 +3,7 @@ defmodule Indexer.Block.Realtime.ConsensusEnsurer do
   Triggers a refetch if a given block doesn't have consensus.
 
   """
+  require Logger
 
   alias Explorer.Chain
   alias Explorer.Chain.Hash
@@ -14,6 +15,14 @@ defmodule Indexer.Block.Realtime.ConsensusEnsurer do
         :ignore
 
       _ ->
+        Logger.info(fn ->
+          [
+            "refetch from consensus was found on block (",
+            to_string(number),
+            "). A reorg initiated."
+          ]
+        end)
+
         # trigger refetch if consensus=false or block was not found
         Fetcher.fetch_and_import_block(number, block_fetcher, true)
     end
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 9c1a4809e2..a29c69baf4 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,6 +1,6 @@
-FROM bitwalker/alpine-elixir-phoenix:latest
+FROM bitwalker/alpine-elixir-phoenix:1.7.1
 
-RUN apk --no-cache --update add automake libtool inotify-tools autoconf
+RUN apk --no-cache --update add automake libtool inotify-tools autoconf python
 
 EXPOSE 4000
 
@@ -19,6 +19,9 @@ RUN mix do deps.get, deps.compile
 
 ADD . .
 
+ARG COIN
+RUN if [ "$COIN" != "" ]; then sed -i s/"POA"/"${COIN}"/g apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po; fi
+
 # Run forderground build and phoenix digest
 RUN mix compile
 
diff --git a/docker/Makefile b/docker/Makefile
index e280a753e5..1f49ff50b5 100644
--- a/docker/Makefile
+++ b/docker/Makefile
@@ -53,7 +53,7 @@ ifdef HAS_BLOCKSCOUT_IMAGE
 	@echo "==> Image exist. Using $(DOCKER_IMAGE)"
 else
 	@echo "==> No image found trying to build one..."
-	@docker build -f ./Dockerfile -t $(DOCKER_IMAGE) ../
+	@docker build --build-arg COIN="$(COIN)" -f ./Dockerfile -t $(DOCKER_IMAGE) ../
 endif
 
 migrate: build postgres