use github cache instead of api.github.com

.github/workflows/main.yml

@@ -25,19 +25,32 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Set some variables
         run: |
+          set -x
+          GITHUB_API_BASEURL='https://api.github.com'
+          TMP_FILE=$(mktemp)
+          if curl -sS -i -I -H "Accept: application/vnd.github.v3+json" -o "$TMP_FILE" -- 'https://github-cache.yingmale.win/api/'; then
+            HTTP_STATUS_CODE=$(awk 'NR==1 {print $2}' "$TMP_FILE")
+            if [[ $HTTP_STATUS_CODE -ge 200 ]] && [[ $HTTP_STATUS_CODE -le 299 ]]; then
+              GITHUB_API_BASEURL='https://github-cache.yingmale.win/api'
+              echo "info: github cache is ready, will use ${GITHUB_API_BASEURL} as GITHUB_API_BASEURL."
+            fi
+          fi
+          "rm" -f "$TMP_FILE"
+
+          echo "GITHUB_API_BASEURL=${GITHUB_API_BASEURL}" >> $GITHUB_ENV
           echo "RELEASE_NAME=$(date +%Y%m%d%H%M%S)" >> $GITHUB_ENV
           echo "TAG_NAME=$(date +%Y%m%d%H%M%S)" >> $GITHUB_ENV
           echo "REPO_URL=github.com/${{ github.repository }}" >> $GITHUB_ENV
           echo "jemalloc_latest_tag_name=$(curl -sL -H 'Accept: application/vnd.github.v3+json' \
-                  'https://api.github.com/repos/jemalloc/jemalloc/releases/latest' |
+                  "${GITHUB_API_BASEURL}/repos/jemalloc/jemalloc/releases/latest" |
                   grep -F 'tag_name' | cut -d'"' -f4)" >> $GITHUB_ENV
           echo "jemalloc_latest_commit_hash=$(curl -sSL --fail --retry 5 --retry-delay 10 --retry-max-time 60 -H 'Accept: application/vnd.github.v3+json' \
-                  'https://api.github.com/repos/jemalloc/jemalloc/commits?per_page=1' |
+                  "${GITHUB_API_BASEURL}/repos/jemalloc/jemalloc/commits?per_page=1" |
                   grep -Fm1 'sha' | cut -d'"' -f4)" >> $GITHUB_ENV
           echo "lua_version=$(curl -sSL \
                   "https://www.lua.org/download.html" | tr -d '\r\n\t' |
@@ -51,6 +64,7 @@ jobs:
                   grep -Po "(?<=a=shortlog;h=refs\/tags\/v)${haproxy_branch}\.[0-9]+" |
                   LC_ALL=C sort -Vr | head -n 1)" >> $GITHUB_ENV
           echo "image_build_date=$(TZ=':Asia/Taipei' date +%F)" >> $GITHUB_ENV
+          set +x
         shell: bash
       # Runs a set of commands using the runners shell
       - name: Force push `release` branch