ci(github): Add a composite action to free disk space

Add a composite action [1] that removes unneeded Docker images and
preinstalled tools to increase the available disk space. This will be
used by jobs that build the ORT Docker image, as otherwise the 14 GB
free disk space that GitHub guarantees [2] are not sufficient.

After the action is executed there are approximately 40 GB disk space
available.

This action could later be replaced by an existing alternative like [3]
or [4], but for now the custom action will be used in the following
changes as it is proven to work for the Docker build jobs.

[1]: https://docs.github.com/en/actions/creating-actions/creating-a-composite-action
[2]: https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories
[3]: https://github.com/easimon/maximize-build-space
[4]: https://github.com/AdityaGarg8/remove-unwanted-software

Signed-off-by: Martin Nonnenmacher <[email protected]>

.github/actions/free-disk-space/action.yml

@@ -0,0 +1,76 @@
+# Copyright (C) 2024 The ORT Project Authors (see <https://github.com/oss-review-toolkit/ort/blob/main/NOTICE>)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# License-Filename: LICENSE
+
+name: "Free Disk Space"
+description: "Remove unneeded preinstalled Docker images and software to free disk space."
+author: "The ORT Project Authors"
+
+runs:
+  using: "composite"
+
+  steps:
+    - name: Print Disk Space
+      shell: bash
+      run: df -h
+    - name: List Docker Images
+      if: ${{ false }} # Can be enabled if the 'Remove Unneeded Docker Images' step below needs to be updated.
+      shell: bash
+      run: docker images
+    - name: Remove Unneeded Docker Images
+      shell: bash
+      run: |
+        docker image rm \
+          node:16 \
+          node:16-alpine \
+          node:18 \
+          node:18-alpine \
+          node:20 \
+          node:20-alpine \
+          debian:10 \
+          debian:11 \
+          ubuntu:20.04 \
+          ubuntu:22.04
+    - name: Print Disk Space
+      shell: bash
+      run: df -h
+    - name: Get Size of Installed Tools
+      if: ${{ false }} # Can be enabled if the 'Remove Unneeded Tools' step below needs to be updated.
+      shell: bash
+      run: |
+        sudo du -hsc /usr/lib/*
+        sudo du -hsc /usr/local/*
+        sudo du -hsc /usr/local/lib/*
+        sudo du -hsc /usr/local/share/*
+        sudo du -hsc /usr/share/*
+    - name: Remove Unneeded Tools
+      shell: bash
+      run: |
+        sudo rm -rf /usr/local/lib/android
+        sudo rm -rf /usr/local/lib/node_modules
+        sudo rm -rf /usr/local/share/chromium
+        sudo rm -rf /usr/local/share/powershell
+        sudo rm -rf /usr/share/az_11.3.1
+        sudo rm -rf /usr/share/dotnet
+        sudo rm -rf /usr/share/kotlinc
+        sudo rm -rf /usr/share/mecab
+        sudo rm -rf /usr/share/miniconda
+        sudo rm -rf /usr/share/ri
+        sudo rm -rf /usr/share/sbt
+        sudo rm -rf /usr/share/swift
+    - name: Print Disk Space
+      shell: bash
+      run: df -h