Fix logo download during docker build

Dockerfile

@@ -4,6 +4,9 @@
 
 FROM node:20-slim AS builder
 
+RUN apt-get update && apt-get install -y --no-install-recommends curl \
+  && rm -rf /var/lib/apt/lists/*
+
 RUN npm install -g pnpm@latest
 
 WORKDIR /app

README.md

@@ -11,7 +11,7 @@ You can also optionally create an `.env` file and populate it with the following
 - `VITE_DEFAULT_PUBKEYS` - A comma-separated list of hex pubkeys for bootstrapping web of trust
 - `VITE_PLATFORM_URL` - The url where the app will be hosted
 - `VITE_PLATFORM_NAME` - The name of the app
-- `VITE_PLATFORM_LOGO` - A logo url for the app
+- `VITE_PLATFORM_LOGO` - A logo url for the app. Can be a local path or https link. Must be a PNG file.
 - `VITE_PLATFORM_RELAYS` - A list of comma-separated relay urls that will make flotilla operate in "platform mode". Disables all space browse/add/select functionality and makes the first platform relay the home page.
 - `VITE_PLATFORM_ACCENT` - A hex color for the app's accent color
 - `VITE_PLATFORM_DESCRIPTION` - A description of the app

build.sh

@@ -17,8 +17,8 @@ if [[ -z $VITE_BUILD_HASH ]]; then
   export VITE_BUILD_HASH=$(git rev-parse --short HEAD)
 fi
 
-if [[ $VITE_PLATFORM_LOGO =~ ^https://* ]]; then
-  curl $VITE_PLATFORM_LOGO > static/logo.png
+if [[ $VITE_PLATFORM_LOGO =~ ^https:// ]]; then
+  curl -fSL "$VITE_PLATFORM_LOGO" -o static/logo.png
   export VITE_PLATFORM_LOGO=static/logo.png
 fi