feat(docker): remove better-sqlite3 preinstall which is no longer needed

better-sqlite now ships pre-builds
which makes the installation almost instant

docker/Dockerfile.build

@@ -12,8 +12,3 @@ LABEL org.opencontainers.image.source https://github.com/thumbsup/thumbsup
 
 # Standard build dependencies for npm install
 RUN apk add --no-cache git make g++ python3 bash
-
-# Pre-install expensive dependencies
-WORKDIR /app
-RUN npm init -y
-RUN npm install better-sqlite3

docker/Dockerfile.test

@@ -1,5 +1,6 @@
 # Node.js + build dependencies + runtime dependencies
 FROM ghcr.io/thumbsup/build:node-12
+WORKDIR /app
 
 # Switch to a non-root user
 # So we can test edge-cases around file permissions