diff --git a/Dockerfile b/Dockerfile
index e64090e..0781b10 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,9 +17,13 @@ RUN npm install && \
 FROM nginx
 COPY --from=builder /crc-bpmn/dist/* /usr/share/nginx/html/
 COPY --from=builder /crc-bpmn/nginx.conf /etc/nginx/conf.d/default.conf
+
+# Script for substituting environment variables
 COPY ./docker/substitute-env-variables.sh ./entrypoint.sh
 RUN chmod +x ./entrypoint.sh
-ENTRYPOINT ["./entrypoint.sh", "/usr/share/nginx/html/index.html"]
+
+# Substitute environment variables in nginx configuration and index.html
+ENTRYPOINT ["./entrypoint.sh", "/usr/share/nginx/html/index.html,/etc/nginx/conf.d/default.conf"]
 
 ### STAGE 3: Profit! ###
 CMD ["nginx", "-g", "daemon off;"]
diff --git a/docker/substitute-env-variables.sh b/docker/substitute-env-variables.sh
old mode 100644
new mode 100755
index ee28b93..b6b187b
--- a/docker/substitute-env-variables.sh
+++ b/docker/substitute-env-variables.sh
@@ -1,18 +1,30 @@
 #!/bin/bash
 
-# The first parameter is the path to the file which should be substituted
+echo 'Substituting environment variables...'
+
+# The first parameter is a comma-delimited list of paths to files which should be substituted
 if [[ -z $1 ]]; then
-  echo 'ERROR: No target file given.'
+  echo 'ERROR: No target files given.'
   exit 1
 fi
 
-# Replace strings in the given file that have the format ${ENV_VAR}
-envsubst '\$PRODUCTION \$API_URL \$IRB_URL' < "$1" > "$1".tmp && mv "$1".tmp "$1"
+env_list='\$PRODUCTION \$API_URL \$IRB_URL \$HOME_ROUTE \$PORT0'
+for file_path in $(echo $1 | sed "s/,/ /g")
+do
+  echo "replacing $env_list in $file_path"
 
-# Set DEBUG=true in order to log the replaced file
-if [ "$DEBUG" = true ] ; then
-  exec cat $1
-fi
+  # Replace strings in the given file(s) in env_list
+  envsubst "$env_list" < "$file_path" > "$file_path".tmp && mv "$file_path".tmp "$file_path"
+
+  echo '...'
+done
+
+echo 'Finished substituting environment variables.'
+echo "PRODUCTION = $PRODUCTION"
+echo "API_URL = $API_URL"
+echo "IRB_URL = $IRB_URL"
+echo "HOME_ROUTE = $HOME_ROUTE"
+echo "PORT0 = $PORT0"
 
 # Execute all other commands with parameters
 exec "${@:2}"
diff --git a/nginx.conf b/nginx.conf
index fd4472f..51982f5 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -1,5 +1,5 @@
 server {
-  listen 80;
+  listen $PORT0;
 
   location / {
     root /usr/share/nginx/html;
diff --git a/package-lock.json b/package-lock.json
index 7be706a..2854c01 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12291,9 +12291,9 @@
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
     },
     "sartography-workflow-lib": {
-      "version": "0.0.159",
-      "resolved": "https://registry.npmjs.org/sartography-workflow-lib/-/sartography-workflow-lib-0.0.159.tgz",
-      "integrity": "sha512-EkXmgoliJkBqsBrI/3N3GLNJmrVgwu4kekU8M6Z2E15+shRwmLH0vxFAWmW0JDG2JGcw7vOhPMb8iVlLlLcr7A=="
+      "version": "0.0.167",
+      "resolved": "https://registry.npmjs.org/sartography-workflow-lib/-/sartography-workflow-lib-0.0.167.tgz",
+      "integrity": "sha512-Ju6VehVOj6yjAYOTEN2PtFbWUXB6LTldaf5GO8iW2lx20Z+TGnrK0Lvgh1hv3/F+7yUqpcZjJvO+ppYahpURRA=="
     },
     "sass": {
       "version": "1.23.3",
diff --git a/package.json b/package.json
index 0789b5e..7e1abb2 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "ngx-file-drop": "^8.0.8",
     "ngx-markdown": "^9.0.0",
     "rxjs": "~6.5.4",
-    "sartography-workflow-lib": "^0.0.159",
+    "sartography-workflow-lib": "^0.0.167",
     "tslib": "^1.11.1",
     "uuid": "^7.0.2",
     "zone.js": "^0.10.3"