diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5bc7847..db26866 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -30,6 +30,15 @@ jobs:
         run: |          
           # Launch the project from docker-compose.yml and wait up to
           # 30s for its built-in health check to return "healthy"
-          docker compose -f compose.yml -f compose.test.yml up --wait --wait-timeout 30
-          docker compose -f compose.yml run --entrypoint "" web pytest
+          set -eu
+
+          if ! docker compose -f compose.yml -f compose.test.yml up --wait --wait-timeout 30; then
+            echo "Project failed to become healthy" >&2
+            echo "Logs:"
+            docker compose  -f compose.yml -f compose.test.yml logs
+            exit 1
+          fi
+          
           docker compose -f compose.yml down
+              
+          docker compose -f compose.yml run --entrypoint "" web pytest
diff --git a/Dockerfile b/Dockerfile
index 27f89e5..b60bc18 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,22 +1,15 @@
-FROM ubuntu:20.04
+FROM python:3.14-alpine
 
 # Maintainer of the docker image, not the code!
 LABEL maintainer="Ian Hinder <ian.hinder@manchester.ac.uk>"
 
 ARG DEBIAN_FRONTEND=noninteractive
 
-RUN apt-get update -y && \
-    apt-get install -y \
-    python3 \
-    python3-pip \
-    python3-requests \
-    pkg-config \
-    graphviz \
-    libgraphviz-dev \
-    libxslt1-dev \
-    curl && \
-    rm -rf /var/lib/apt/lists/*
-# Note: the ordering of these packages matters as libgraphviz-dev requires python3-pip
+RUN apk add build-base
+
+RUN apk add graphviz graphviz-dev
+
+RUN apk add curl
 
 COPY ./requirements.txt /app/requirements.txt
 
diff --git a/application.py b/application.py
index 611d0c6..310e85a 100644
--- a/application.py
+++ b/application.py
@@ -47,10 +47,9 @@
 app.wsgi_app = ProxyFix(app.wsgi_app, x_proto=1)
 
 os.environ['PATH'] = os.environ['PATH'] + ':/usr/local/bin'
-os.environ['GV_FILE_PATH'] = os.path.abspath(os.path.join(os.path.dirname(__file__), 'static/images/')) + '/'
+IMAGE_FILE_PATH = os.path.abspath(os.path.join(os.path.dirname(__file__), 'static/images'))
 
 print('PATH: ' + os.environ['PATH'], file=sys.stderr)
-print('GV_FILE_PATH: ' + os.environ['GV_FILE_PATH'], file=sys.stderr)
 
 class TitleNotFoundException(Exception):
     pass
@@ -141,14 +140,14 @@ def get_graph_string(graph):
     # URL to an image, only the file path.
     for image in images:
         image_filename = image.attrib['{http://www.w3.org/1999/xlink}href']
-        image_url = url_for('static', filename = 'images/' + image_filename)
+        image_url = url_for('static', filename = 'images/' + image_filename.replace(f"{IMAGE_FILE_PATH}/",""))
         image.attrib['{http://www.w3.org/1999/xlink}href'] = image_url
 
     return etree.tostring(svg_obj, pretty_print = True).decode('utf-8')
 
 def get_image_files():
     image_files = []
-    image_dir = os.environ['GV_FILE_PATH']
+    image_dir = IMAGE_FILE_PATH
 
     for root, sub_folders, files in os.walk(image_dir):
         for filename in files:
@@ -177,7 +176,7 @@ def build_graph(name, results, topics):
 
         # check added for _ in name e.g. Anja Le_Blanc; that is: convert _ to space
         myperson= person.replace(' ', '\n')
-        graph.add_node(person, label = myperson.replace('_' , ' '), fontname = 'Helvetica', fixedsize = True, imagescale = True, width = '1.5', height = '1.5', fontcolor = 'white', shape = 'circle', style = 'filled', color = '#303030', URL = url_for('show_person', name = person), image = image_file)
+        graph.add_node(person, label = myperson.replace('_' , ' '), fontname = 'Helvetica', fixedsize = True, imagescale = True, width = '1.5', height = '1.5', fontcolor = 'white', shape = 'circle', style = 'filled', color = '#303030', URL = url_for('show_person', name = person), image = f"{IMAGE_FILE_PATH}/{image_file}")
 
         interests = people[person]['interests']
         for interest in interests:
@@ -188,7 +187,7 @@ def build_graph(name, results, topics):
                 color = '#105060EE'
                 shape = 'ellipse'
 
-            label = re.sub('\(.*\)', '', interest)
+            label = re.sub(r'\(.*\)', '', interest)
 
             graph.add_node(interest, label = label, style = 'filled', fontname = 'Helvetica', shape = shape, color = color, fontcolor = 'white', URL = url_for('show_topic', name = interest))
             graph.add_edge(person, interest, color = '#00000050')
@@ -202,7 +201,7 @@ def build_graph(name, results, topics):
                     color = '#701050EE'
                     shape = 'ellipse'
 
-                label = re.sub('\(.*\)', '', technology)
+                label = re.sub(r'\(.*\)', '', technology)
 
                 graph.add_node(technology, label = label, style = 'filled', fontname = 'Helvetica', shape = shape, color = color, fontcolor = 'white')
                 graph.add_edge(person, technology, color = '#00000050')
diff --git a/requirements.in b/requirements.in
index 55fd06b..0843eb5 100644
--- a/requirements.in
+++ b/requirements.in
@@ -1,13 +1,7 @@
-Click
 Flask
-itsdangerous
-Jinja2
 lxml
-MarkupSafe
 natsort
 pygraphviz
-pyparsing
 pytest
 urllib3
-Werkzeug
 pip-tools
diff --git a/requirements.txt b/requirements.txt
index eea93e4..373d648 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,41 +1,30 @@
 #
-# This file is autogenerated by pip-compile with Python 3.8
+# This file is autogenerated by pip-compile with Python 3.14
 # by the following command:
 #
 #    pip-compile
 #
-blinker==1.8.2
+blinker==1.9.0
     # via flask
-build==1.2.2.post1
+build==1.3.0
     # via pip-tools
-click==8.1.8
+click==8.3.1
     # via
-    #   -r requirements.in
     #   flask
     #   pip-tools
-exceptiongroup==1.3.0
-    # via pytest
-flask==3.0.3
+flask==3.1.2
     # via -r requirements.in
-importlib-metadata==8.5.0
-    # via
-    #   build
-    #   flask
-iniconfig==2.1.0
+iniconfig==2.3.0
     # via pytest
 itsdangerous==2.2.0
-    # via
-    #   -r requirements.in
-    #   flask
+    # via flask
 jinja2==3.1.6
-    # via
-    #   -r requirements.in
-    #   flask
+    # via flask
 lxml==6.0.2
     # via -r requirements.in
-markupsafe==2.1.5
+markupsafe==3.0.3
     # via
-    #   -r requirements.in
+    #   flask
     #   jinja2
     #   werkzeug
 natsort==8.4.0
@@ -44,37 +33,26 @@ packaging==25.0
     # via
     #   build
     #   pytest
-pip-tools==7.5.0
+pip-tools==7.5.2
     # via -r requirements.in
-pluggy==1.5.0
+pluggy==1.6.0
     # via pytest
-pygraphviz==1.11
-    # via -r requirements.in
-pyparsing==3.1.4
+pygments==2.19.2
+    # via pytest
+pygraphviz==1.14
     # via -r requirements.in
 pyproject-hooks==1.2.0
     # via
     #   build
     #   pip-tools
-pytest==8.3.5
+pytest==9.0.1
     # via -r requirements.in
-tomli==2.2.1
-    # via
-    #   build
-    #   pip-tools
-    #   pytest
-typing-extensions==4.13.2
-    # via exceptiongroup
-urllib3==2.2.3
+urllib3==2.5.0
     # via -r requirements.in
-werkzeug==3.0.6
-    # via
-    #   -r requirements.in
-    #   flask
+werkzeug==3.1.4
+    # via flask
 wheel==0.45.1
     # via pip-tools
-zipp==3.20.2
-    # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip