Use Python 3.8 in Docker images by default

This bumps us closer to current Python without going all the way to 3.9. Fixes matrix-org#8674 Signed-off-by: Dan Callahan <danc@element.io>
callahad · Oct 31, 2020 · 2c63423 · 2c63423
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commit 2c63423
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diff --git a/changelog.d/8698.misc b/changelog.d/8698.misc
@@ -0,0 +1 @@
+Use Python 3.8 in Docker images by default.
diff --git a/docker/Dockerfile b/docker/Dockerfile
@@ -11,7 +11,7 @@
 #    docker build -f docker/Dockerfile --build-arg PYTHON_VERSION=3.6 .
 #
 
-ARG PYTHON_VERSION=3.7
+ARG PYTHON_VERSION=3.8
 
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 ### Stage 0: builder