Add docker support

Dockerfile

@@ -0,0 +1,5 @@
+FROM centos:7
+
+RUN yum --nogpgcheck -y install http://people.redhat.com/rsawhill/rpms/latest-rsawaroha-release.rpm
+
+RUN yum --nogpgcheck -y install rhsecapi

README.md

@@ -179,6 +179,12 @@ sys	0m0.055s
   1. Optional: `mkdir -p ~/bin; ln -sv /PATH/TO/rhsecapi.py ~/bin/rhsecapi`
   1. Execute: `rhsecapi`
 
+- **Option 3: Install docker version**
+  1. cd rhsecpai
+  1. yum install docker for RHEL, can depend on your OS
+  1. chmod +x install_docker.sh
+  1. sudo ./install_docker.sh
+  1. rhsecapi.sh CVE-2015-4642
 
 ## Abbreviated usage
 

docker-compose.yml

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+version: '3'
+
+services:
+  centos_rhsecapi:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: centos_rhsecapi
+    restart: always
+    command: bash
+    tty: true

install_docker.sh

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+#!/bin/bash
+
+if ! command -v docker &> /dev/null; then
+    echo "Docker is not installed. Please install Docker and try again."
+    exit 1
+fi
+
+if ! docker info &> /dev/null; then
+    echo "Docker is not running. Please start Docker and try again."
+    exit 1
+fi
+
+docker-compose build
+docker-compose up -d
+
+cat <<EOF > /usr/bin/rhsecapi.sh
+#!/bin/bash
+
+# Wrapper script to run rhsecapi inside the Docker container
+
+DOCKER_CONTAINER_NAME="centos_rhsecapi"
+
+docker exec -it \$DOCKER_CONTAINER_NAME rhsecapi "\$@"
+EOF
+
+chmod +x /usr/bin/rhsecapi.sh
+
+echo "rhsecapi docker installed!."