diff --git a/README.md b/README.md
index 067405f..ca1e210 100755
--- a/README.md
+++ b/README.md
@@ -70,7 +70,7 @@ If you want to run the app locally, without using Docker, then:
 -   Install the dependencies. Run:
 
     ```sh
-    uv sync
+    uv sync --frozen
     ```
 
 -   Start the app. Run:
diff --git a/bin/Dockerfile-template b/bin/Dockerfile-template
index 744c0b0..b1ba518 100644
--- a/bin/Dockerfile-template
+++ b/bin/Dockerfile-template
@@ -5,13 +5,17 @@ ARG PYTHON_VERSION=bleh
 FROM python:${PYTHON_VERSION}-slim AS builder
 COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
 
+# Show the currently running commands
+SHELL ["sh", "-exc"]
+
 # Set working directory
 WORKDIR /app
 
 # Install dependencies
-COPY pyproject.toml uv.lock /app/
 RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-install-project --no-editable --no-dev
+    --mount=type=bind,source=uv.lock,target=uv.lock \
+    --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
+    uv sync --no-install-project --locked --no-dev
 
 # Copy the project source code into the builder stage
 COPY . /app
@@ -22,6 +26,9 @@ FROM python:${PYTHON_VERSION}-slim
 # Set the working directory in the final image
 WORKDIR /app
 
+# See <https://hynek.me/articles/docker-signals/>.
+STOPSIGNAL SIGINT
+
 # Copy the virtual environment and the source code from the builder stage
 COPY --from=builder /app/.venv /app/.venv
 COPY --from=builder /app /app
diff --git a/dockerfiles/python311/Dockerfile b/dockerfiles/python311/Dockerfile
index 8141354..46cae56 100644
--- a/dockerfiles/python311/Dockerfile
+++ b/dockerfiles/python311/Dockerfile
@@ -5,13 +5,17 @@ ARG PYTHON_VERSION=3.11
 FROM python:${PYTHON_VERSION}-slim AS builder
 COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
 
+# Show the currently running commands
+SHELL ["sh", "-exc"]
+
 # Set working directory
 WORKDIR /app
 
 # Install dependencies
-COPY pyproject.toml uv.lock /app/
 RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-install-project --no-editable --no-dev
+    --mount=type=bind,source=uv.lock,target=uv.lock \
+    --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
+    uv sync --no-install-project --locked --no-dev
 
 # Copy the project source code into the builder stage
 COPY . /app
@@ -22,6 +26,9 @@ FROM python:${PYTHON_VERSION}-slim
 # Set the working directory in the final image
 WORKDIR /app
 
+# See <https://hynek.me/articles/docker-signals/>.
+STOPSIGNAL SIGINT
+
 # Copy the virtual environment and the source code from the builder stage
 COPY --from=builder /app/.venv /app/.venv
 COPY --from=builder /app /app
diff --git a/dockerfiles/python312/Dockerfile b/dockerfiles/python312/Dockerfile
index db08742..6409815 100644
--- a/dockerfiles/python312/Dockerfile
+++ b/dockerfiles/python312/Dockerfile
@@ -5,13 +5,17 @@ ARG PYTHON_VERSION=3.12
 FROM python:${PYTHON_VERSION}-slim AS builder
 COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
 
+# Show the currently running commands
+SHELL ["sh", "-exc"]
+
 # Set working directory
 WORKDIR /app
 
 # Install dependencies
-COPY pyproject.toml uv.lock /app/
 RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-install-project --no-editable --no-dev
+    --mount=type=bind,source=uv.lock,target=uv.lock \
+    --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
+    uv sync --no-install-project --locked --no-dev
 
 # Copy the project source code into the builder stage
 COPY . /app
@@ -22,6 +26,9 @@ FROM python:${PYTHON_VERSION}-slim
 # Set the working directory in the final image
 WORKDIR /app
 
+# See <https://hynek.me/articles/docker-signals/>.
+STOPSIGNAL SIGINT
+
 # Copy the virtual environment and the source code from the builder stage
 COPY --from=builder /app/.venv /app/.venv
 COPY --from=builder /app /app
diff --git a/dockerfiles/python313/Dockerfile b/dockerfiles/python313/Dockerfile
index ec27f4f..602f556 100644
--- a/dockerfiles/python313/Dockerfile
+++ b/dockerfiles/python313/Dockerfile
@@ -12,9 +12,10 @@ SHELL ["sh", "-exc"]
 WORKDIR /app
 
 # Install dependencies
-COPY pyproject.toml uv.lock /app/
 RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-install-project --no-editable --no-dev
+    --mount=type=bind,source=uv.lock,target=uv.lock \
+    --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
+    uv sync --no-install-project --locked --no-dev
 
 # Copy the project source code into the builder stage
 COPY . /app
@@ -25,6 +26,9 @@ FROM python:${PYTHON_VERSION}-slim
 # Set the working directory in the final image
 WORKDIR /app
 
+# See <https://hynek.me/articles/docker-signals/>.
+STOPSIGNAL SIGINT
+
 # Copy the virtual environment and the source code from the builder stage
 COPY --from=builder /app/.venv /app/.venv
 COPY --from=builder /app /app