Vim plugin: allow using system black rather than virtualenv (#3309)

[etc/vim.git] / Dockerfile

diff --git a/Dockerfile b/Dockerfile
index a03d23a10782f09ea291c3a67880a758a5bef692..4e8f12f97981accfe603e03f368fbe98d4c7cea5 100644 (file)
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,19 @@
-FROM python:3
+FROM python:3-slim AS builder

 
 

-ENV PYTHONDONTWRITEBYTECODE 1
-ENV PYTHONUNBUFFERED 1
+RUN mkdir /src
+COPY . /src/
+ENV VIRTUAL_ENV=/opt/venv
+RUN python -m venv $VIRTUAL_ENV
+RUN . /opt/venv/bin/activate && pip install --no-cache-dir --upgrade pip setuptools wheel \
+    # Install build tools to compile dependencies that don't have prebuilt wheels
+    && apt update && apt install -y git build-essential \
+    && cd /src \
+    && pip install --no-cache-dir .[colorama,d]

 
 

-RUN pip install --upgrade --no-cache-dir black
+FROM python:3-slim

 
 

-ENTRYPOINT /usr/local/bin/black --check --diff  .
+# copy only Python packages to limit the image size
+COPY --from=builder /opt/venv /opt/venv
+ENV PATH="/opt/venv/bin:$PATH"
+
+CMD ["/opt/venv/bin/black"]