A few small updates

Dockerfile

@@ -1,13 +1,10 @@
-FROM crystallang/crystal:1.14.1
+FROM crystallang/crystal:latest
 WORKDIR /data
 EXPOSE 3002
 
-RUN apt-get update \
-  && apt-get install -y \
-    libnss3 \
-    libgconf-2-4 \
-    chromium-browser \
-    firefox \
-  && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+RUN apt-get update && \
+  apt-get install -y chromium-browser firefox && \
+  apt-get clean && \
+  rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 COPY . /data

README.md

@@ -72,6 +72,16 @@ require "lucky_flow/ext/authentic"
 
 View guide at: https://luckyframework.org/guides/browser-tests/
 
+## Development
+
+> [!NOTE]
+> If you use Flatpak to install Chrome, specs will fail to detect your Chrome binary.
+> Install Chrome via a standard package install.
+
+- Run format `crystal tool format spec/ src/`
+- Run Ameba `./bin/ameba`
+- Run specs `crystal spec` (or via docker with `./script/setup` and `./script/test`)
+
 ## Contributing
 
 1. Fork it ( https://github.com/luckyframework/lucky_flow/fork )