Set up basic CI

.drone.yml

@@ -25,12 +25,13 @@ steps:
       # Check formatting
       - mix format --check-formatted
       # Wait for postgres to become available
-      - |
-        for i in {1..20}; do
-          pg_isready -h postgres -p $DATABASE_PORT && break
-          sleep 2
-        done
-        echo "Postgres did not become available, aborting"
-        exit 1
+      # TODO: pg_isready is not installed in the elixir image
+      # - |
+      #   for i in {1..20}; do
+      #     pg_isready -h postgres -p $DATABASE_PORT && break
+      #     sleep 2
+      #   done
+      #   echo "Postgres did not become available, aborting"
+      #   exit 1
       # Run tests
       - mix test