feat: Add script to check for Docker port usage

check-for-docker-port/README.md

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+# Run command
+
+```bash
+bash -c "$(wget -qLO - https://raw.githubusercontent.com/bigbeartechworld/big-bear-scripts/master/check-for-docker-port/run.sh)"
+```

check-for-docker-port/run.sh

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+#!/bin/bash
+
+# Function to check if jq is installed
+check_jq_installed() {
+  if ! command -v jq &> /dev/null; then
+    echo "jq is required but it's not installed. Would you like to install it now? (yes/no)"
+    read answer
+    if [[ "$answer" == "yes" ]]; then
+      if [ -x "$(command -v apt-get)" ]; then
+        sudo apt-get update && sudo apt-get install -y jq
+      elif [ -x "$(command -v yum)" ]; then
+        sudo yum install -y jq
+      else
+        echo "Package manager not supported. Please install jq manually."
+        exit 1
+      fi
+    else
+      echo "jq is not installed. Exiting."
+      exit 1
+    fi
+  fi
+}
+
+# Check if jq is installed
+check_jq_installed
+
+# Check if a port number is provided as an argument
+if [ -z "$1" ]; then
+  read -p "Enter the port number to search for: " port
+else
+  port=$1
+fi
+
+# Check if the input is a valid number
+if ! [[ "$port" =~ ^[0-9]+$ ]]; then
+  echo "Invalid port number. Please enter a valid number."
+  exit 1
+fi
+
+# Iterate through all containers and check if the specified port is used
+echo "Searching for containers using port $port..."
+for container in $(sudo docker ps -a -q); do
+  if sudo docker inspect $container | jq -e --arg port "$port/tcp" '.[0].NetworkSettings.Ports | has($port)'; then
+    status=$(sudo docker inspect -f '{{.State.Status}}' $container)
+    echo "Container ID $container is configured to use port $port and is currently $status"
+  fi
+done
+
+echo "Search completed."