[pre-commit.ci] auto fixes from pre-commit.com hooks

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Author: pre-commit-ci[bot]

docs/source/changelog.md

@@ -149,12 +149,12 @@
 ### Merged PRs
 
 - [MRG] Cleanup install_requires including duplicates [#1020](https://github.com/jupyterhub/repo2docker/pull/1020) ([@manics](https://github.com/manics))
-- buildpacks.r: dont use apt-key directly to respect *_proxy env vars [#1019](https://github.com/jupyterhub/repo2docker/pull/1019) ([@g-braeunlich](https://github.com/g-braeunlich))
+- buildpacks.r: dont use apt-key directly to respect \*\_proxy env vars [#1019](https://github.com/jupyterhub/repo2docker/pull/1019) ([@g-braeunlich](https://github.com/g-braeunlich))
 - freeze with mamba, add 3.9 [#1017](https://github.com/jupyterhub/repo2docker/pull/1017) ([@minrk](https://github.com/minrk))
-- bump python in circleci  test [#1013](https://github.com/jupyterhub/repo2docker/pull/1013) ([@minrk](https://github.com/minrk))
+- bump python in circleci test [#1013](https://github.com/jupyterhub/repo2docker/pull/1013) ([@minrk](https://github.com/minrk))
 - fix dataverse regression introduced in last release [#1011](https://github.com/jupyterhub/repo2docker/pull/1011) ([@MridulS](https://github.com/MridulS))
 - Add GH workflow to push releases to PYPi and introduce CalVer [#1004](https://github.com/jupyterhub/repo2docker/pull/1004) ([@betatim](https://github.com/betatim))
-- Add entrypoint script which automatically propagates *_PROXY env vars… [#1003](https://github.com/jupyterhub/repo2docker/pull/1003) ([@g-braeunlich](https://github.com/g-braeunlich))
+- Add entrypoint script which automatically propagates \*\_PROXY env vars… [#1003](https://github.com/jupyterhub/repo2docker/pull/1003) ([@g-braeunlich](https://github.com/g-braeunlich))
 - Update to JupyterLab 3.0 [#996](https://github.com/jupyterhub/repo2docker/pull/996) ([@jtpio](https://github.com/jtpio))
 - Add a contentprovider for Software Heritage persistent ID (SWHID) [#988](https://github.com/jupyterhub/repo2docker/pull/988) ([@douardda](https://github.com/douardda))
 - [MRG] Stream jupyter server logs to a file [#987](https://github.com/jupyterhub/repo2docker/pull/987) ([@betatim](https://github.com/betatim))
@@ -422,7 +422,7 @@
 - fix docker commit tag [#562](https://github.com/jupyterhub/repo2docker/pull/562) ([@minrk](https://github.com/minrk))
 - Set JULIA_DEPOT_PATH [#555](https://github.com/jupyterhub/repo2docker/pull/555) ([@yuvipanda](https://github.com/yuvipanda))
 - Updated log info for local content provider [#551](https://github.com/jupyterhub/repo2docker/pull/551) ([@GladysNalvarte](https://github.com/GladysNalvarte))
-- Fixes Travis build errors related to pytest and Sphinx  [#547](https://github.com/jupyterhub/repo2docker/pull/547) ([@craig-willis](https://github.com/craig-willis))
+- Fixes Travis build errors related to pytest and Sphinx [#547](https://github.com/jupyterhub/repo2docker/pull/547) ([@craig-willis](https://github.com/craig-willis))
 - Spurious comment in `Dockerfile` #543 [#544](https://github.com/jupyterhub/repo2docker/pull/544) ([@benjaminr](https://github.com/benjaminr))
 - Bump default python version to 3.7 [#539](https://github.com/jupyterhub/repo2docker/pull/539) ([@yuvipanda](https://github.com/yuvipanda))
 - Use a minimal hand-crafted Dockerfile for speed [#536](https://github.com/jupyterhub/repo2docker/pull/536) ([@betatim](https://github.com/betatim))
@@ -543,10 +543,10 @@
 - scinece -> science [#347](https://github.com/jupyterhub/repo2docker/pull/347) ([@danielleberre](https://github.com/danielleberre))
 - Fix some rst weirdness in the uage docs [#346](https://github.com/jupyterhub/repo2docker/pull/346) ([@betatim](https://github.com/betatim))
 - Add DockerSpawner command in JupyterHub config [#344](https://github.com/jupyterhub/repo2docker/pull/344) ([@rprimet](https://github.com/rprimet))
-- Test that images can start notebook servers in all the builders  [#343](https://github.com/jupyterhub/repo2docker/pull/343) ([@GladysNalvarte](https://github.com/GladysNalvarte))
+- Test that images can start notebook servers in all the builders [#343](https://github.com/jupyterhub/repo2docker/pull/343) ([@GladysNalvarte](https://github.com/GladysNalvarte))
 - Setup auto releasing on GitHub tagging [#342](https://github.com/jupyterhub/repo2docker/pull/342) ([@betatim](https://github.com/betatim))
 - documentation improvements based on reviews for walkthrough and configuration details [#338](https://github.com/jupyterhub/repo2docker/pull/338) ([@jzf2101](https://github.com/jzf2101))
-- Tweaking Docs for Readability  [#335](https://github.com/jupyterhub/repo2docker/pull/335) ([@jzf2101](https://github.com/jzf2101))
+- Tweaking Docs for Readability [#335](https://github.com/jupyterhub/repo2docker/pull/335) ([@jzf2101](https://github.com/jzf2101))
 - Include LICENSE file in wheels [#327](https://github.com/jupyterhub/repo2docker/pull/327) ([@toddrme2178](https://github.com/toddrme2178))
 - Switch to miniconda v4.5.1 [#324](https://github.com/jupyterhub/repo2docker/pull/324) ([@betatim](https://github.com/betatim))
 - Support shiny apps [#320](https://github.com/jupyterhub/repo2docker/pull/320) ([@ryanlovett](https://github.com/ryanlovett))
@@ -556,12 +556,12 @@
 - stencila support [#309](https://github.com/jupyterhub/repo2docker/pull/309) ([@minrk](https://github.com/minrk))
 - Add links to the front page and modify travis [#308](https://github.com/jupyterhub/repo2docker/pull/308) ([@betatim](https://github.com/betatim))
 - Bump nteract jupyter extension [#306](https://github.com/jupyterhub/repo2docker/pull/306) ([@yuvipanda](https://github.com/yuvipanda))
-- remove _nb_ext_conf from legacy env [#303](https://github.com/jupyterhub/repo2docker/pull/303) ([@minrk](https://github.com/minrk))
+- remove \_nb_ext_conf from legacy env [#303](https://github.com/jupyterhub/repo2docker/pull/303) ([@minrk](https://github.com/minrk))
 - bump base image to ubuntu 18.04 [#302](https://github.com/jupyterhub/repo2docker/pull/302) ([@minrk](https://github.com/minrk))
 - Documentation and warning improvements [#300](https://github.com/jupyterhub/repo2docker/pull/300) ([@choldgraf](https://github.com/choldgraf))
 - Fix two typos [#299](https://github.com/jupyterhub/repo2docker/pull/299) ([@darabos](https://github.com/darabos))
 - Always install Python with conda [#298](https://github.com/jupyterhub/repo2docker/pull/298) ([@minrk](https://github.com/minrk))
-- split  post build script command in Docker file [#294](https://github.com/jupyterhub/repo2docker/pull/294) ([@bitnik](https://github.com/bitnik))
+- split post build script command in Docker file [#294](https://github.com/jupyterhub/repo2docker/pull/294) ([@bitnik](https://github.com/bitnik))
 - Add guidelines on merging work [#292](https://github.com/jupyterhub/repo2docker/pull/292) ([@betatim](https://github.com/betatim))
 - Support setup.py in Python buildpacks [#289](https://github.com/jupyterhub/repo2docker/pull/289) ([@GladysNalvarte](https://github.com/GladysNalvarte))
 - Use travis_retry to run tests [#288](https://github.com/jupyterhub/repo2docker/pull/288) ([@betatim](https://github.com/betatim))
@@ -570,7 +570,7 @@
 - Add note about os support and update example repo [#283](https://github.com/jupyterhub/repo2docker/pull/283) ([@willingc](https://github.com/willingc))
 - Add codecov configuration to enable PR comments [#279](https://github.com/jupyterhub/repo2docker/pull/279) ([@betatim](https://github.com/betatim))
 - fixing python2 search [#277](https://github.com/jupyterhub/repo2docker/pull/277) ([@choldgraf](https://github.com/choldgraf))
-- Freeze legacy environment  [#276](https://github.com/jupyterhub/repo2docker/pull/276) ([@GladysNalvarte](https://github.com/GladysNalvarte))
+- Freeze legacy environment [#276](https://github.com/jupyterhub/repo2docker/pull/276) ([@GladysNalvarte](https://github.com/GladysNalvarte))
 - Refreeze environments [#274](https://github.com/jupyterhub/repo2docker/pull/274) ([@willingc](https://github.com/willingc))
 - add docstrings to docker buildpack [#272](https://github.com/jupyterhub/repo2docker/pull/272) ([@willingc](https://github.com/willingc))
 - add docstrings for conda buildpack [#271](https://github.com/jupyterhub/repo2docker/pull/271) ([@willingc](https://github.com/willingc))
@@ -609,7 +609,7 @@
 - Provide a flag to pass environment variables at runtime [#186](https://github.com/jupyterhub/repo2docker/pull/186) ([@rprimet](https://github.com/rprimet))
 - Stop using alpine base images [#183](https://github.com/jupyterhub/repo2docker/pull/183) ([@yuvipanda](https://github.com/yuvipanda))
 - Fix indentation causing only last line of apt.txt to be parsed [#181](https://github.com/jupyterhub/repo2docker/pull/181) ([@nmih](https://github.com/nmih))
-- Fixed run argument check for mounting volumes.  [#179](https://github.com/jupyterhub/repo2docker/pull/179) ([@mukundans91](https://github.com/mukundans91))
+- Fixed run argument check for mounting volumes. [#179](https://github.com/jupyterhub/repo2docker/pull/179) ([@mukundans91](https://github.com/mukundans91))
 - Add default command to base Dockerfile template [#176](https://github.com/jupyterhub/repo2docker/pull/176) ([@AaronWatters](https://github.com/AaronWatters))
 - Added regex pattern based validation for image name argument [#175](https://github.com/jupyterhub/repo2docker/pull/175) ([@mukundans91](https://github.com/mukundans91))
 - Allow mounting arbitrary volumes into the repo2docker container [#172](https://github.com/jupyterhub/repo2docker/pull/172) ([@yuvipanda](https://github.com/yuvipanda))
@@ -723,4 +723,3 @@
 ([GitHub contributors page for this release](https://github.com/jupyterhub/repo2docker/graphs/contributors?from=2017-04-19&to=2017-05-25&type=c))
 
 [@choldgraf](https://github.com/search?q=repo%3Ajupyterhub%2Frepo2docker+involves%3Acholdgraf+updated%3A2017-04-19..2017-05-25&type=Issues) | [@minrk](https://github.com/search?q=repo%3Ajupyterhub%2Frepo2docker+involves%3Aminrk+updated%3A2017-04-19..2017-05-25&type=Issues) | [@willingc](https://github.com/search?q=repo%3Ajupyterhub%2Frepo2docker+involves%3Awillingc+updated%3A2017-04-19..2017-05-25&type=Issues) | [@yuvipanda](https://github.com/search?q=repo%3Ajupyterhub%2Frepo2docker+involves%3Ayuvipanda+updated%3A2017-04-19..2017-05-25&type=Issues)
-