Update base image (#12)

* Updating the base image to the latest

This updates the base alpine image to the latest which addresses
multiple known vulnerabilities
Signed-off-by: Andrew Thompson <andrew.thompson@crowdstrike.com>

* Fixing typo in README
Signed-off-by: Andrew Thompson <andrew.thompson@crowdstrike.com>
Signed-off-by: Andrew Thompson <andrew.thompson@crowdstrike.com>

Dockerfile

-FROM alpine:3.9 as builder
+FROM alpine:3.15 as builder
 
 MAINTAINER Opstree Solutions
 
@@ -21,7 +21,7 @@ RUN curl -fL -Lo /tmp/redis-${REDIS_VERSION}.tar.gz ${REDIS_DOWNLOAD_URL}/redis-
     mkdir -p /etc/redis && \
     cp -f *.conf /etc/redis
 
-FROM alpine:3.9
+FROM alpine:3.15
 
 MAINTAINER Opstree Solutions
 

Dockerfile.exporter

-FROM alpine:3.9 as builder
+FROM alpine:3.15 as builder
 
 ARG EXPORTER_URL="https://github.com/oliver006/redis_exporter/releases/download"
 

README.md

@@ -4,7 +4,7 @@
 
 # Ot-Container-Kit (Redis)
 
-I am a repo which have a production based Redis and Redis Expoer docker image codebase.
+I am a repo which have a production based Redis and Redis Exporter docker image codebase.
 
 ## Features