Make local DEV work out of the box

scripts/post_install.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -e
+
+cd "$(dirname "$0")"/..
+
+if [ ! -f .env ]; then
+  cp .env.example .env
+  echo ".env file created from .env.example"
+fi

scripts/run_local.sh

@@ -4,26 +4,27 @@ set -e
 
 cd "$(dirname "$0")"/..
 
-ENV=${1:-prod}
-PROJECT=$2
-case $ENV in
-    dev)
-      NEXT_ENV=DEV ;;
-    prod)
-      NEXT_ENV=PROD ;;
-    *)
-      echo "Invalid environment; must be dev or prod."
-      exit 1
+ENVIRONMENT=${1:-dev}
+echo "Running in $ENVIRONMENT environment"
+case $ENVIRONMENT in
+  dev)
+    NEXT_ENV=DEV
+    ;;
+  prod)
+    NEXT_ENV=PROD
+    ;;
+  *)
+    echo "Unknown environment: $ENVIRONMENT"
+    exit 1
+    ;;
 esac
 
 WEB_DIR=web
 
-source .env
-
 npx dotenv -e .env -- npx concurrently \
   -n API,NEXT,TS \
   -c white,magenta,cyan \
-  "cross-env ENV=$NEXT_ENV ENVIRONMENT=$NEXT_ENV yarn --cwd=backend/api dev" \
+  "cross-env ENVIRONMENT=$NEXT_ENV yarn --cwd=backend/api dev" \
   "cross-env NEXT_PUBLIC_FIREBASE_ENV=$NEXT_ENV yarn --cwd=$WEB_DIR serve" \
   "cross-env yarn --cwd=$WEB_DIR ts-watch"