Github Self-hosted runner setup script

gistfile1.txt

server_url="REPLACE_WITH_SERVER_URL"
server_api_url="api.$server_url"
org="REPLACE_WITH_ORG_NAME"
repo="REPLACE_WITH_REPO_NAME"
registration_token_raw=$(curl -L \
  -X POST \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer $GH_TOKEN"\
  -H "X-GitHub-Api-Version: 2022-11-28" \
  https://$server_api_url/repos/$org/$repo/actions/runners/registration-token) 

# Get binary downloading token from GitHub server 
download_details_raw=$(curl -L \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer $GH_TOKEN" \
  https://$server_api_url/repos/$org/$repo/actions/runners/downloads) 
  
# Regex definition for download_url, download_filename,download_token and registration_token
download_url_regex='download_url\":\ \"(https://[-[:alnum:]/_:.]+linux-x64[-[:alnum:]/.]+)\"'
download_filename_regex='filename\":\ \"([-[:alnum:].]+linux-x64[-[:alnum:].]+.gz)\"'
download_token_regex='temp_download_token\":\ \"([A-z0-9.\n\-]+)"'
registration_token_regex='token\":\ \"([A-z0-9.\-]+)\"'

# Extract data from raw response 
if [[ $download_details_raw =~ $download_url_regex ]]; then   download_url="${BASH_REMATCH[1]}"; else  emit "no match found for: download_url_regex"; fi
if [[ $download_details_raw =~ $download_filename_regex ]]; then   filename="${BASH_REMATCH[1]}"; else  emit "no match found for: download_filename_regex"; fi
if [[ $download_details_raw =~ $download_token_regex ]]; then   download_token="${BASH_REMATCH[1]}"; else  download_token=$GH_TOKEN; fi
if [[ $registration_token_raw =~ $registration_token_regex ]]; then   registration_token="${BASH_REMATCH[1]}"; else  emit "no match found for: registration_token_regex"; fi

# Download agent binary
emit "Download binary"
curl -L \
  -o $filename \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer $download_token" \
  $download_url