diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 1ddd633a..361c47ae 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -9,26 +9,28 @@ on:
     types: [published]
 
 jobs:
+  # NOTE: this job requires curl, jq and yarn
+  # All of them are included in ubuntu-latest.
   npm:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
+
       - name: Run ./ci/steps/publish-npm.sh
-        uses: ./ci/images/debian10
-        with:
-          args: ./ci/steps/publish-npm.sh
+        run: ./ci/steps/publish-npm.sh
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
 
+  # NOTE: this job requires curl, jq and docker
+  # All of them are included in ubuntu-latest.
   docker:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
+
       - name: Run ./ci/steps/push-docker-manifest.sh
-        uses: ./ci/images/debian10
-        with:
-          args: ./ci/steps/push-docker-manifest.sh
+        run: ./ci/steps/push-docker-manifest.sh
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
diff --git a/ci/dev/image/run.sh b/ci/dev/image/run.sh
deleted file mode 100755
index 3d5e15dd..00000000
--- a/ci/dev/image/run.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-main() {
-  cd "$(dirname "$0")/../../.."
-  source ./ci/lib.sh
-  mkdir -p .home
-
-  docker run \
-    -it \
-    --rm \
-    -v "$PWD:/src" \
-    -e HOME="/src/.home" \
-    -e USER="coder" \
-    -e GITHUB_TOKEN \
-    -e KEEP_MODULES \
-    -e MINIFY \
-    -w /src \
-    -p 127.0.0.1:8080:8080 \
-    -u "$(id -u):$(id -g)" \
-    -e CI \
-    "$(docker_build ./ci/images/"${IMAGE-debian10}")" \
-    "$@"
-}
-
-docker_build() {
-  docker build "$@" >&2
-  docker build -q "$@"
-}
-
-main "$@"
diff --git a/ci/images/centos7/Dockerfile b/ci/images/centos7/Dockerfile
deleted file mode 100644
index e057b93d..00000000
--- a/ci/images/centos7/Dockerfile
+++ /dev/null
@@ -1,30 +0,0 @@
-FROM centos:7
-
-ARG NODE_VERSION=v12.18.4
-RUN ARCH="$(uname -m | sed 's/86_64/64/; s/aarch64/arm64/')" && \
-    curl -fsSL "https://nodejs.org/dist/$NODE_VERSION/node-$NODE_VERSION-linux-$ARCH.tar.xz" | tar -C /usr/local -xJ && \
-    mv "/usr/local/node-$NODE_VERSION-linux-$ARCH" "/usr/local/node-$NODE_VERSION"
-ENV PATH=/usr/local/node-$NODE_VERSION/bin:$PATH
-RUN npm install -g yarn
-
-RUN yum groupinstall -y 'Development Tools'
-RUN yum install -y python2
-
-RUN npm config set python python2
-
-RUN yum install -y epel-release && yum install -y jq
-RUN yum install -y rsync
-
-# Install Go.
-RUN ARCH="$(uname -m | sed 's/x86_64/amd64/; s/aarch64/arm64/')" && \
-    curl -fsSL "https://dl.google.com/go/go1.14.3.linux-$ARCH.tar.gz" | tar -C /usr/local -xz
-ENV GOPATH=/gopath
-# Ensures running this image as another user works.
-RUN mkdir -p $GOPATH && chmod -R 777 $GOPATH
-ENV PATH=/usr/local/go/bin:$GOPATH/bin:$PATH
-
-# Install Go dependencies
-ENV GO111MODULE=on
-RUN go get github.com/goreleaser/nfpm/cmd/nfpm@v2.3.1
-
-RUN curl -fsSL https://get.docker.com | sh
diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md
index 7f17d449..22f4feb8 100644
--- a/docs/CONTRIBUTING.md
+++ b/docs/CONTRIBUTING.md
@@ -57,13 +57,6 @@ yarn watch
 # Visit http://localhost:8080 once the build is completed.
 ```
 
-To develop inside an isolated Docker container:
-
-```shell
-./ci/dev/image/run.sh yarn
-./ci/dev/image/run.sh yarn watch
-```
-
 `yarn watch` will live reload changes to the source.
 
 ### Updating VS Code
@@ -89,7 +82,9 @@ To update VS Code, follow these steps:
 You can build using:
 
 ```shell
-./ci/dev/image/run.sh ./ci/steps/release.sh
+yarn build
+yarn build:vscode
+yarn release
 ```
 
 Run your build with:
@@ -101,24 +96,7 @@ yarn --production
 node .
 ```
 
-Build the release packages (make sure that you run `./ci/steps/release.sh` first):
-
-```shell
-IMAGE=centos7 ./ci/dev/image/run.sh ./ci/steps/release-packages.sh
-# The standalone release is in ./release-standalone
-# .deb, .rpm and the standalone archive are in ./release-packages
-```
-
-The `release.sh` script is equal to running:
-
-```shell
-yarn
-yarn build
-yarn build:vscode
-yarn release
-```
-
-And `release-packages.sh` is equal to:
+Build the release packages (make sure that you run `yarn release` first):
 
 ```shell
 yarn release:standalone
@@ -126,12 +104,10 @@ yarn test:standalone-release
 yarn package
 ```
 
-For a faster release build, you can run instead:
-
-```shell
-KEEP_MODULES=1 ./ci/steps/release.sh
-node ./release
-```
+NOTE: On Linux, the currently running distro will become the minimum supported version.
+In our GitHub Actions CI, we use CentOS 7 for maximum compatibility.
+If you need your builds to support older distros, run the build commands
+inside a Docker container with all the build requirements installed.
 
 ## Structure