diff --git a/docker/Dockerfile b/docker/Dockerfile
index 34553e2ed..4c4065d91 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,7 +1,8 @@
 # Set base image 
-# python:latest will get the latest version of python, on linux
+# python:3.14 is the newest version the test matrix covers, and is what the
+# python:latest tag resolves to today. Pinning keeps the two from drifting apart.
 # Get a full list of python images here: https://hub.docker.com/_/python/tags
-FROM python:latest
+FROM python:3.14
 
 # set the working directory in the container
 WORKDIR /RocketPy
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 244b9dcff..17918c487 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -1,10 +1,10 @@
 version: '3.8'
 
 services:
-  python39-linux:
-    image: python:3.9
+  python310-linux:
+    image: python:3.10
     volumes:
-      - .:/app
+      - ..:/app
     working_dir: /app
     command: bash -c "pip install . && pip install -r requirements-tests.txt && pytest && cd rocketpy && pytest --doctest-modules"
     logging:
@@ -15,7 +15,7 @@ services:
   python312-linux:
     image: python:3.12
     volumes:
-      - .:/app
+      - ..:/app
     working_dir: /app
     command: bash -c "pip install . && pip install -r requirements-tests.txt && pytest && cd rocketpy && pytest --doctest-modules"
     logging:
diff --git a/docs/development/docker.rst b/docs/development/docker.rst
index bc1de8745..be36ada77 100644
--- a/docs/development/docker.rst
+++ b/docs/development/docker.rst
@@ -37,11 +37,13 @@ Before you start, you need to install on your machine:
 Build the image
 ----------------
 
-To build the image, run the following command on your terminal:
+To build the image, run the following command from the root of the repository
+(the ``Dockerfile`` copies ``requirements.txt``, so the build context has to
+be the repository, not the ``docker`` folder):
 
 .. code-block:: console
 
-   docker build -t rocketpy-image -f Dockerfile .
+   docker build -t rocketpy-image -f docker/Dockerfile .
 
 
 This will build the image and tag it as ``rocketpy-image`` (you can apply another
@@ -108,10 +110,11 @@ operational system.
 However, it is still useful to run the unit tests on different python versions.
 
 Currently, the ``docker-compose.yml`` file is configured to run the unit tests
-on python 3.9 and 3.12.
+on python 3.10 and 3.12.
 
 To run the unit tests on both python versions, run the following command
-**on your machine**:
+**on your machine**, from inside the ``docker`` folder (the services mount
+the repository root, one level up, as ``/app``):
 
 .. code-block:: console
 
@@ -155,7 +158,7 @@ For example, to use a Windows-based image, you might change:
 
 .. code-block:: Dockerfile
 
-   FROM python:latest
+   FROM python:3.14
 
 
 to