Upgrade Alpine linux to 3.16.5 (#165)

diff --git a/Dockerfile b/Dockerfile
index 23ec7a7..77e4831 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,7 +15,7 @@
 # limitations under the License.
 #
 
-FROM alpine:3.16.4 as builder
+FROM alpine:3.16.5 as builder
 
 RUN apk add --no-cache --virtual .tools \
   bzip2 curl git automake libtool autoconf make sed file perl openrc openssl
@@ -123,7 +123,7 @@
 # set up ingress log location
 RUN mkdir -p /opt/ats/var/log/ingress/
 
-FROM alpine:3.16.4
+FROM alpine:3.16.5
 
 # essential library  
 RUN apk add --no-cache -U \
diff --git a/README.md b/README.md
index d72d82a..3ce2250 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@
 - [Development](https://github.com/apache/trafficserver-ingress-controller/blob/master/docs/DEVELOPMENT.md)
 
 ## Versions of Software Used
-- Alpine Linux 3.16.4
+- Alpine Linux 3.16.5
 - Apache Traffic Server 9.2.0
 - LuaJIT 2.0.4
 - Go (Version can be found in `GO_VERSION` file found at the base of this repository)