diff --git a/.keys/generate-keys.sh b/.keys/generate-keys.sh
index 7a9cf36..d460c13 100755
--- a/.keys/generate-keys.sh
+++ b/.keys/generate-keys.sh
@@ -3,7 +3,8 @@
 # Check for openssl
 command -v openssl >/dev/null 2>&1 || { echo >&2 "openssl required but not found.  Aborting."; exit 1; }
 
-DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+DIR=`dirname "$0"`
+DIR=`exec 2>/dev/null;(cd -- "$DIR") && cd -- "$DIR"|| cd "$DIR"; unset PWD; /usr/bin/pwd || /bin/pwd || pwd`
 
 # Remove any existing key files
 [ ! -e "$DIR/cert.pem" ]  || rm "$DIR/cert.pem"
diff --git a/build.sh b/build.sh
index 629e605..fdfda45 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,7 @@
-#!/bin/bash
+#!/bin/sh
 
-DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+DIR=`dirname "$0"`
+DIR=`exec 2>/dev/null;(cd -- "$DIR") && cd -- "$DIR"|| cd "$DIR"; unset PWD; /usr/bin/pwd || /bin/pwd || pwd`
 
 # If there aren't any keys, generate them first.
 [ -e "$DIR/.keys/cert.cert" ] || "$DIR/.keys/generate-keys.sh"
diff --git a/src/licenseGen/build.sh b/src/licenseGen/build.sh
index 0837edb..31d08ac 100755
--- a/src/licenseGen/build.sh
+++ b/src/licenseGen/build.sh
@@ -1,5 +1,6 @@
-#!/bin/bash
+#!/bin/sh
 
-DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+DIR=`dirname "$0"`
+DIR=`exec 2>/dev/null;(cd -- "$DIR") && cd -- "$DIR"|| cd "$DIR"; unset PWD; /usr/bin/pwd || /bin/pwd || pwd`
 
 docker build -t bitbetter/licensegen "$DIR" # --squash
diff --git a/src/licenseGen/run.sh b/src/licenseGen/run.sh
index 144e4e1..ebfdd58 100755
--- a/src/licenseGen/run.sh
+++ b/src/licenseGen/run.sh
@@ -1,6 +1,7 @@
-#!/bin/bash
+#!/bin/sh
 
-DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && cd ../.. && pwd)"
+DIR=`dirname "$0"`
+DIR=`exec 2>/dev/null;(cd -- "$DIR") && cd -- "$DIR"|| cd "$DIR"; unset PWD; /usr/bin/pwd || /bin/pwd || pwd`
 
 # Grab the absolute path to the default pfx location
 cert_path="$DIR/.keys/cert.pfx"