Clean up release

apps/explorer/lib/release_tasks.ex

@@ -16,6 +16,19 @@ defmodule Explorer.ReleaseTasks do
 
   @repos Application.compile_env(:blockscout, :ecto_repos, [Explorer.Repo])
 
+  def create_and_migrate do
+    start_services()
+
+    create()
+    run_migrations()
+
+    stop_services()
+  end
+
+  def create do
+    Enum.each(@repos, &create_db_for/1)
+  end
+
   def migrate(_argv) do
     start_services()
 
@@ -51,6 +64,16 @@ defmodule Explorer.ReleaseTasks do
     :init.stop()
   end
 
+  defp create_db_for(repo) do
+    IO.puts("Create #{inspect(repo)} database if it doesn't exist")
+
+    case repo.__adapter__.storage_up(repo.config) do
+      :ok -> :ok
+      {:error, :already_up} -> :ok
+      {:error, term} -> {:error, term}
+    end
+  end
+
   defp run_migrations do
     Enum.each(@repos, &run_migrations_for/1)
   end

docker/Dockerfile

@@ -1,4 +1,6 @@
-FROM bitwalker/alpine-elixir-phoenix:1.13
+FROM bitwalker/alpine-elixir-phoenix:1.13 AS builder
+
+WORKDIR /opt/app
 
 RUN apk --no-cache --update add alpine-sdk gmp-dev automake libtool inotify-tools autoconf python3 file qemu-x86_64
 
@@ -64,5 +66,15 @@ RUN cd apps/explorer/ && \
 
 RUN mix phx.digest
 
-RUN mix release blockscout \
-  && cp -R _build/${MIX_ENV}/rel/blockscout/* ./
+RUN mkdir -p /opt/release \
+  && mix release blockscout \
+  && mv _build/${MIX_ENV}/rel/blockscout /opt/release
+
+##############################################################
+FROM bitwalker/alpine-elixir-phoenix:1.13
+
+WORKDIR /opt/app
+
+COPY --from=builder /opt/release/blockscout .
+
+