diff --git a/app/Dockerfile b/app/Dockerfile
index 936a173..2f54edc 100644
--- a/app/Dockerfile
+++ b/app/Dockerfile
@@ -1,13 +1,10 @@
-FROM python:3.12.4-slim-bookworm
+FROM python:3.12.4-alpine3.20
 
 ENV PYTHONDONTWRITEBYTECODE 1
 ENV PYTHONUNBUFFERED 1
 
 WORKDIR /usr/src/app
 
-RUN apt-get -y update
-RUN apt-get -y upgrade
-
 RUN python -m pip install --upgrade --upgrade-strategy eager pip
 
 RUN mkdir -p /usr/src/app
diff --git a/app/docker-entrypoint.sh b/app/docker-entrypoint.sh
index e606e25..6b56000 100644
--- a/app/docker-entrypoint.sh
+++ b/app/docker-entrypoint.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 # Abort the entire script if an error occurs
 set -e
diff --git a/app/pg_dump.sh b/app/pg_dump.sh
index 72ec7c7..22a939b 100644
--- a/app/pg_dump.sh
+++ b/app/pg_dump.sh
@@ -1,3 +1,3 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
-PGPASSWORD="$JOB_HISTORY_DB_PASSWORD" pg_dump --file=backup_to_restore.sql --format=p --clean --encoding=utf8 --if-exists --dbname=$JOB_HISTORY_DB_NAME --host=$JOB_HISTORY_DB_HOST --port=$JOB_HISTORY_DB_PORT --username=$JOB_HISTORY_DB_USERNAME
+PGPASSWORD="$JOB_HISTORY_DB_PASSWORD" pg_dump --file=backup_to_restore.sql --format=p --clean --encoding=utf8 --if-exists --dbname="$JOB_HISTORY_DB_NAME" --host="$JOB_HISTORY_DB_HOST" --port=$JOB_HISTORY_DB_PORT --username="$JOB_HISTORY_DB_USERNAME"
diff --git a/app/requirements.txt b/app/requirements.txt
index a5a445a..7f6b3d0 100644
--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -1,5 +1,5 @@
 asgiref==3.8.1
-astroid==3.2.3
+astroid==3.2.4
 colorama==0.4.6
 dill==0.3.8
 Django==4.2.14
@@ -11,7 +11,7 @@ platformdirs==4.2.2
 pylint==3.2.5
 pytz==2024.1
 six==1.16.0
-sqlparse==0.5.0
+sqlparse==0.5.1
 tomlkit==0.13.0
 wheel==0.43.0
 whitenoise==6.7.0
diff --git a/app/tcp-port-wait.sh b/app/tcp-port-wait.sh
index 356a52d..ad6ff2d 100644
--- a/app/tcp-port-wait.sh
+++ b/app/tcp-port-wait.sh
@@ -1,16 +1,17 @@
-#!/usr/bin/env bash
-set -e 
+#!/bin/sh
 
-if [ -z "$1" -o -z "$2" ]
+set -e
+
+if [ -z "$1" ] || [ -z "$2" ]
 then
     echo "tcp-port-wait - block until specified TCP port becomes available"
-    echo "Usage: ntcp-port-wait HOST PORT"
+    echo "Usage: tcp-port-wait HOST PORT"
     exit 1
 fi
-echo Waiting for port $1:$2 to become available...
-while ! nc -z $1 $2 2>/dev/null
+echo Waiting for port "$1":$2 to become available...
+while ! nc -z "$1" $2 2>/dev/null
 do
-    let elapsed=elapsed+1
+    elapsed=$elapsed+1
     if [ "$elapsed" -gt 90 ] 
     then
         echo "TIMED OUT !"