Merge pull request #1552 from LemmyNet/feature/1550-optional-config-values

Make some of the database config values optional (fixes #1550)

diff --cc docker/dev/volume_mount.dockerfile
index d848e0ea6cf7e08eccd1de8c1108add9fa049f89,38e019f7f52f5070e571c3f8ca7b5c7f56be6192..00d9c47357efc4af9f8edfd6660ac2e53fe47fde
--- 1/docker/dev/volume_mount.dockerfile
--- 2/docker/dev/volume_mount.dockerfile
+++ b/docker/dev/volume_mount.dockerfile
@@@ -19,12 -19,11 +19,11 @@@ RUN --mount=type=cache,target=/app/targ
  
  FROM ubuntu:20.10
  
 -# Install libpq for postgres and espeak
 +# Install libpq for postgres
  RUN apt-get update -y
 -RUN apt-get install -y libpq-dev espeak 
 +RUN apt-get install -y libpq-dev
  
  # Copy resources
- COPY config/defaults.hjson /config/defaults.hjson
  COPY --from=rust /app/lemmy_server /app/lemmy
  
  EXPOSE 8536