Add a docker dev environment that starts a container without building the image

+ Add dev.sh script to start the dev environment
+ Add generated flags to the .gitignore file

dev.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+DATABASE_PASSWORD=server docker-compose up -d mail postgres redis
+
+if [ ! "$(docker ps -a | grep server_dev)" ]; then
+    echo Creating "server_dev" container
+    
+    docker run -it \
+        --name server_dev \
+        --mount type=bind,source="$(pwd)",target=/app \
+        --network server_default \
+        -p 3000:3000 -e PORT=3000 \
+        -e DATABASE_URL="postgresql://server:server@postgres:5432/management?schema=public" \
+        -e DATABASE_USER=server \
+        -e DATABASE_PASSWORD=server \
+        --entrypoint "/app/scripts/docker-entrypoint.dev.sh" \
+        node
+else
+    echo "Container \"server_dev\" already exists; Starting container"
+
+    docker start -ia server_dev
+fi
+
+# After container termination
+
+docker-compose stop