From d8a5169f22969e3607fa76a6beef5261239b243d Mon Sep 17 00:00:00 2001
From: Sajith Sasidharan <sajith@renci.org>
Date: Tue, 18 Jun 2024 13:52:00 -0500
Subject: [PATCH] Run the app using a helper script

All so that uvicorn will use and print the same port that we specified
with SDXLC_PORT when running `docker compose up`.
---
 Dockerfile    |  5 +----
 entrypoint.sh | 10 ++++++++++
 2 files changed, 11 insertions(+), 4 deletions(-)
 create mode 100755 entrypoint.sh

diff --git a/Dockerfile b/Dockerfile
index 97cc9fd..9cd7673 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,4 @@ ENV VIRTUAL_ENV="/opt/venv"
 
 RUN pip3 install --no-cache-dir .[wsgi]
 
-EXPOSE 8080
-
-ENTRYPOINT ["python3"]
-CMD ["-m", "uvicorn", "sdx_lc.app:asgi_app", "--host", "0.0.0.0", "--port", "8080"]
+CMD ["./entrypoint.sh"]
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100755
index 0000000..680265b
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,10 @@
+#! /bin/sh
+
+# A helper script that can be executed off docker, just so that
+# uvicorn will print the right port number.  Docker will not do
+# environment variable substitution in CMD lines, so this script
+# became necessary.
+
+set -eu
+
+python3 -m uvicorn sdx_lc.app:asgi_app --host 0.0.0.0 --port "$SDXLC_PORT"