build: let uv track git version changes; copy full checkout in Docker

Add uv cache-keys for the commit and tags so the editable install is
refreshed when the git state changes, and copy the complete checkout
(with .git) into the builder so setuptools-scm sees a clean worktree.
Previously the partial copy made git describe report a dirty tree and
tagged Docker builds got a development version suffix.

.dockerignore

@@ -1,4 +1,3 @@
-.gitignore
 .venv/
 __pycache__/
 *.py[cod]
@@ -7,15 +6,11 @@ __pycache__/
 .mypy_cache/
 .env
 .env.*
-docker-compose*.yml
-Dockerfile
-.dockerignore
-*.md
-!README.md
 xmcp.yml
-xmcp.example.yml
+xmcp.local.yml
 
 # Generated at build time
 src/xmcp/_version.py
 *.egg-info/
+build/
 dist/

Dockerfile

@@ -20,11 +20,10 @@ COPY pyproject.toml uv.lock .python-version ./
 RUN --mount=type=cache,target=/root/.cache/uv \
     uv sync --frozen --no-dev --no-install-project
 
-# Then install the project itself as a regular wheel. The git metadata is
+# Then install the project itself. The full checkout (including .git) is
-# required by setuptools-scm to derive the package version.
+# copied so setuptools-scm sees a clean worktree and derives the version
-COPY README.md ./
+# from the closest release tag.
-COPY src ./src
+COPY . .
-COPY .git ./.git
 RUN --mount=type=cache,target=/root/.cache/uv \
     uv sync --frozen --no-dev --no-editable
 

pyproject.toml

@@ -25,3 +25,10 @@ version_file = "src/xmcp/_version.py"
 
 [tool.setuptools_scm.tag]
 prefix = "release/"
+
+[tool.uv]
+# setuptools-scm derives the version from git; make uv notice commit/tag changes.
+cache-keys = [
+    { file = "pyproject.toml" },
+    { git = { commit = true, tags = true } },
+]