diff --git a/python3.6-alpine3.8/start-reload.sh b/python3.6-alpine3.8/start-reload.sh
index 01a9e203..0f23d28e 100644
--- a/python3.6-alpine3.8/start-reload.sh
+++ b/python3.6-alpine3.8/start-reload.sh
@@ -14,8 +14,8 @@ HOST=${HOST:-0.0.0.0}
 PORT=${PORT:-80}
 LOG_LEVEL=${LOG_LEVEL:-info}
 
-# If there's a prestart.sh script in the /app directory, run it before starting
-PRE_START_PATH=/app/prestart.sh
+# If there's a prestart.sh script in the /app directory or other path specified, run it before starting
+PRE_START_PATH=${PRE_START_PATH:-/app/prestart.sh}
 echo "Checking for script in $PRE_START_PATH"
 if [ -f $PRE_START_PATH ] ; then
     echo "Running script $PRE_START_PATH"
diff --git a/python3.6-alpine3.8/start.sh b/python3.6-alpine3.8/start.sh
index 65879b4d..835f97b2 100644
--- a/python3.6-alpine3.8/start.sh
+++ b/python3.6-alpine3.8/start.sh
@@ -19,8 +19,8 @@ else
 fi
 export GUNICORN_CONF=${GUNICORN_CONF:-$DEFAULT_GUNICORN_CONF}
 
-# If there's a prestart.sh script in the /app directory, run it before starting
-PRE_START_PATH=/app/prestart.sh
+# If there's a prestart.sh script in the /app directory or other path specified, run it before starting
+PRE_START_PATH=${PRE_START_PATH:-/app/prestart.sh}
 echo "Checking for script in $PRE_START_PATH"
 if [ -f $PRE_START_PATH ] ; then
     echo "Running script $PRE_START_PATH"
diff --git a/python3.6/start-reload.sh b/python3.6/start-reload.sh
index 01a9e203..0f23d28e 100644
--- a/python3.6/start-reload.sh
+++ b/python3.6/start-reload.sh
@@ -14,8 +14,8 @@ HOST=${HOST:-0.0.0.0}
 PORT=${PORT:-80}
 LOG_LEVEL=${LOG_LEVEL:-info}
 
-# If there's a prestart.sh script in the /app directory, run it before starting
-PRE_START_PATH=/app/prestart.sh
+# If there's a prestart.sh script in the /app directory or other path specified, run it before starting
+PRE_START_PATH=${PRE_START_PATH:-/app/prestart.sh}
 echo "Checking for script in $PRE_START_PATH"
 if [ -f $PRE_START_PATH ] ; then
     echo "Running script $PRE_START_PATH"
diff --git a/python3.6/start.sh b/python3.6/start.sh
index 65879b4d..835f97b2 100644
--- a/python3.6/start.sh
+++ b/python3.6/start.sh
@@ -19,8 +19,8 @@ else
 fi
 export GUNICORN_CONF=${GUNICORN_CONF:-$DEFAULT_GUNICORN_CONF}
 
-# If there's a prestart.sh script in the /app directory, run it before starting
-PRE_START_PATH=/app/prestart.sh
+# If there's a prestart.sh script in the /app directory or other path specified, run it before starting
+PRE_START_PATH=${PRE_START_PATH:-/app/prestart.sh}
 echo "Checking for script in $PRE_START_PATH"
 if [ -f $PRE_START_PATH ] ; then
     echo "Running script $PRE_START_PATH"
diff --git a/python3.7-alpine3.8/start-reload.sh b/python3.7-alpine3.8/start-reload.sh
index 01a9e203..0f23d28e 100644
--- a/python3.7-alpine3.8/start-reload.sh
+++ b/python3.7-alpine3.8/start-reload.sh
@@ -14,8 +14,8 @@ HOST=${HOST:-0.0.0.0}
 PORT=${PORT:-80}
 LOG_LEVEL=${LOG_LEVEL:-info}
 
-# If there's a prestart.sh script in the /app directory, run it before starting
-PRE_START_PATH=/app/prestart.sh
+# If there's a prestart.sh script in the /app directory or other path specified, run it before starting
+PRE_START_PATH=${PRE_START_PATH:-/app/prestart.sh}
 echo "Checking for script in $PRE_START_PATH"
 if [ -f $PRE_START_PATH ] ; then
     echo "Running script $PRE_START_PATH"
diff --git a/python3.7-alpine3.8/start.sh b/python3.7-alpine3.8/start.sh
index 65879b4d..835f97b2 100644
--- a/python3.7-alpine3.8/start.sh
+++ b/python3.7-alpine3.8/start.sh
@@ -19,8 +19,8 @@ else
 fi
 export GUNICORN_CONF=${GUNICORN_CONF:-$DEFAULT_GUNICORN_CONF}
 
-# If there's a prestart.sh script in the /app directory, run it before starting
-PRE_START_PATH=/app/prestart.sh
+# If there's a prestart.sh script in the /app directory or other path specified, run it before starting
+PRE_START_PATH=${PRE_START_PATH:-/app/prestart.sh}
 echo "Checking for script in $PRE_START_PATH"
 if [ -f $PRE_START_PATH ] ; then
     echo "Running script $PRE_START_PATH"
diff --git a/python3.7/start-reload.sh b/python3.7/start-reload.sh
index 01a9e203..0f23d28e 100644
--- a/python3.7/start-reload.sh
+++ b/python3.7/start-reload.sh
@@ -14,8 +14,8 @@ HOST=${HOST:-0.0.0.0}
 PORT=${PORT:-80}
 LOG_LEVEL=${LOG_LEVEL:-info}
 
-# If there's a prestart.sh script in the /app directory, run it before starting
-PRE_START_PATH=/app/prestart.sh
+# If there's a prestart.sh script in the /app directory or other path specified, run it before starting
+PRE_START_PATH=${PRE_START_PATH:-/app/prestart.sh}
 echo "Checking for script in $PRE_START_PATH"
 if [ -f $PRE_START_PATH ] ; then
     echo "Running script $PRE_START_PATH"
diff --git a/python3.7/start.sh b/python3.7/start.sh
index 65879b4d..835f97b2 100644
--- a/python3.7/start.sh
+++ b/python3.7/start.sh
@@ -19,8 +19,8 @@ else
 fi
 export GUNICORN_CONF=${GUNICORN_CONF:-$DEFAULT_GUNICORN_CONF}
 
-# If there's a prestart.sh script in the /app directory, run it before starting
-PRE_START_PATH=/app/prestart.sh
+# If there's a prestart.sh script in the /app directory or other path specified, run it before starting
+PRE_START_PATH=${PRE_START_PATH:-/app/prestart.sh}
 echo "Checking for script in $PRE_START_PATH"
 if [ -f $PRE_START_PATH ] ; then
     echo "Running script $PRE_START_PATH"