diff --git a/.dockerignore b/.dockerignore
index a7b4704..f1d320d 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,4 +1,4 @@
-*.aex
+*.aes
 codeship-services.yml
 codeship-steps.yml
 dockercfg
diff --git a/.gitignore b/.gitignore
index 001f959..2cb41ec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,15 +1,4 @@
 # environment files typically containing secrets
-*.env
-!example.env
-
-# directories created by developer tools
-.idea/
-
-# dependency directories
-node_modules/
-vendor/
-.terraform/
-
 *.env
 *.aes
 dockercfg
diff --git a/Dockerfile b/Dockerfile
index ef9610f..f28afa5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,13 @@
 FROM alpine:3
 
+# Variables set with ARG can be overridden at image build time with
+# "--build-arg var=value".  They are not available in the running container.
+ARG B2_VERSION=v3.10.0
+
 # Install b2, curl, perl, jq
 RUN cd /tmp \
  && wget -O /usr/local/bin/b2 \
-    https://github.com/Backblaze/B2_Command_Line_Tool/releases/latest/download/b2-linux \
+    https://github.com/Backblaze/B2_Command_Line_Tool/releases/download/${B2_VERSION}/b2-linux \
  && chmod +x /usr/local/bin/b2 \
  && apk update \
  && apk add --no-cache curl perl jq \
diff --git a/README.md b/README.md
index ecc9029..f66f36f 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ it in a Backblaze B2 bucket.
     1. In the left navigation area, click `Buckets`.
     1. Click `Create a Bucket`.
         * Bucket Unique Name: _supply a name_
-        * File in Bucket are: `Private`
+        * Files in Bucket are: `Private`
         * Default Encryption: `Enable`
         * Object Lock: `Disable`
     1. Click `Create a Bucket`.
@@ -46,7 +46,7 @@ it in a Backblaze B2 bucket.
 1. Set and export the environment variable `B2_APPLICATION_KEY_ID` with the Backblaze access token ID as its value.
 1. Set and export the environment variable `B2_APPLICATION_KEY` with the Backblaze access token secret as its value.
 1. To perform a YouTrack Cloud database backup:
-`youtrack-backup.pl --baseurl=`_yt-url_`  --bucket=`_b2-bucket-name_
+youtrack-backup.pl --baseurl _yt-url_ --bucket _b2-bucket-name_
 
 ## Example use with Docker and Backblaze
 
diff --git a/dockercfg.encrypted b/dockercfg.encrypted
index 5a91785..ed50750 100644
--- a/dockercfg.encrypted
+++ b/dockercfg.encrypted
@@ -1,2 +1,2 @@
-codeship:v2
-RcEzjbKUss+E6GAZ2P07g7gi9gepAGbsv3AJSzQpu1VTsBSJ1onWxxi0koS1/gsfPlM3C5oxLCFj4r2eas5WzFMBAe5JTQwlTthievGUizMf2DWA3KvK6+tHAtdmCiROk4ZIw89I4AwUpCUWQHAN3+H1XxkHSWj0Ufddfz+Sw7kuvupI7w2NJzRADuOSDXyY2OtDfMV1W6QWw2/R/ISWAQ+qG6ziVMCRvcZCKmBivbuDi9kVVoRf26MSRG6IvFbDCad8LrH91X129szpjNvkuKma8Ur0MV58YC0dQUmtXZ9A8mYSEOhWviZ89vCf+Ylli3ATIKfdN+nasoDPpS0RoXaaN9MPU++x5q9j3tPDHcCPMud4HV48jKTsLbGGvM32I3ALCrsFFoSFV8HuKKa8Zh5bOV/f2l5D+FA64E/CTNGMjWnhk2/TBA==
\ No newline at end of file
+cloudbees:v1
+6WHygVcP8ORz7T9mPPH62qxW0lVq4L3qq2czf4be7DMDln8K+Rv/iBCL0ZrtFPFBVcPM8QTIOHjby/EMiWVbFUQ2X/kwird1Uw7u6Tau91KqqALic2CLavmBXCKWG4NY4aPHl4SufxjSZhwMx6taGsnNNWsVPEQeGU3IX6Bs7xMWrhshCIfIQUWzrp1j9HMjNX5sAheAOpJfdX5SCNJ5lZBJiz8qog8FhC9z7qgrYN3MURx8NEtPE6XPO0R8NOGjzqcN5O37qXjQZlpN45ifuxFdyQHU6nYStkfjfS9txJ/hCcFVvhR01SPvv4tffIdbz5pR3A/JoF6RA9wCGXOl2gJtZqsbDcWIgamoouxkH9YVKazU8NJK2YnEu/ijjYw/acA5pfiCLy8Qp3OVWjFbkoOaLJKOZfl7s0fW9kwRe3RSVWJBf3tQUQ==
\ No newline at end of file