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docs/source/howto/base_image.md

@@ -1,21 +1,21 @@
-# Change the base image used by Docker
-
-You may change the base image used in the `Dockerfile` that creates images by repo2docker.
-This is equivalent to changing the `FROM <base_image>` in the Dockerfile.
-
-To do so, use the `base_image` traitlet when invoking `repo2docker`.
-Note that this is not configurable by individual repositories, it is configured when you invoke the `repo2docker` command.
-
-```{note}
-By default repo2docker builds on top of the `buildpack-deps:bionic` base image, an Ubuntu-based image.
-```
-
-## Requirements for your base image
-
-`repo2docker` will only work if a specific set of packages exists in the base image.
-Only images that match the following criteria are supported:
-
-- Ubuntu based distributions (minimum `18.04`)
-- Contains a set of base packages installed with [the `buildpack-deps` image family](https://hub.docker.com/_/buildpack-deps).
-
-Other images *may* work, but are not officially supported.
+# Change the base image used by Docker
+
+You may change the base image used in the `Dockerfile` that creates images by repo2docker.
+This is equivalent to changing the `FROM <base_image>` in the Dockerfile.
+
+To do so, use the `base_image` traitlet when invoking `repo2docker`.
+Note that this is not configurable by individual repositories, it is configured when you invoke the `repo2docker` command.
+
+```{note}
+By default repo2docker builds on top of the `buildpack-deps:bionic` base image, an Ubuntu-based image.
+```
+
+## Requirements for your base image
+
+`repo2docker` will only work if a specific set of packages exists in the base image.
+Only images that match the following criteria are supported:
+
+- Ubuntu based distributions (minimum `18.04`)
+- Contains a set of base packages installed with [the `buildpack-deps` image family](https://hub.docker.com/_/buildpack-deps).
+
+Other images _may_ work, but are not officially supported.