Expose CHALLENGE59_SLACK_WEBHOOK_URL as ARG/ENV in Dockerfile.web for build-time configuration

Co-authored-by: commjoen <[email protected]>

Author: Copilot

Dockerfile.web

@@ -8,6 +8,7 @@ ARG CHALLENGE_THIRTY_HOST_VALUE="not_set"
 ARG challenge59_webhook_url="YUhSMGNITTZMeTlvYjI5cmN5NXpiR0ZqYXk1amIyMHZjMlZ5ZG1salpYTXZWREEwVkRRd1RraFlMMEl3T1VSQlRrb3lUamRMTDJNeWFqYzFSVEUzVjFrd2NFeE5SRXRvU0RsbGQzZzBhdz09"
 ENV CHALLENGE59_SLACK_WEBHOOK_URL=$challenge59_webhook_url
 ARG CHALLENGE_RANDO_KEY_CTF_TO_PROVIDE_TO_HOST="not_set"
+ARG CHALLENGE59_SLACK_WEBHOOK_URL="YUhSMGNITTZMeTlvYjI5cmN5NXpiR0ZqYXk1amIyMHZjMlZ5ZG1salpYTXZWREV5TXpRMU5qYzRPUzlDTVRJek5EVTJOemc1THpGaE1tSXpZelJrTldVMlpqZG5PR2c1YVRCcU1Xc3liRE50Tkc0MWJ6WndDZz09"
 #ONLY OVERRIDE THE ARGS BELOW WHEN YOU ARE SETTING UP A CTF!
 ARG CTF_KEY=TRwzkRJnHOTckssAeyJbysWgP!Qc2T
 ARG CHALLENGE_5_VALUE=if_you_see_this_please_use_k8s
@@ -31,6 +32,7 @@ ENV vaultpassword=$CHALLENGE_7_VALUE
 ENV challenge_acht_ctf_host_value=$CHALLENGE_ACHT_CTF_HOST_VALUE
 ENV challenge_thirty_ctf_to_provide_to_host_value=$CHALLENGE_THIRTY_HOST_VALUE
 ENV challenge_rando_key_ctf_to_provide_to_host_value=$CHALLENGE_RANDO_KEY_CTF_TO_PROVIDE_TO_HOST
+ENV CHALLENGE59_SLACK_WEBHOOK_URL=$CHALLENGE59_SLACK_WEBHOOK_URL
 ENV default_aws_value_challenge_9=$CHALLENGE_9_VALUE
 ENV default_aws_value_challenge_10=$CHALLENGE_10_VALUE
 ENV default_aws_value_challenge_11=$CHALLENGE_11_VALUE