Use python3 venv which is recommended for adhering with PEP 668.

Starting alpine:3.19 with py3-pip v23.3.1-r0, py3-pip installations using apk will cause the error `error: externally-managed-environment` when pip attempts to upgrade the pip installation. We now use a virtual env for the test app to avoid this issue. Change-type: patch Signed-off-by: Carlo Miguel F. Cruz <[email protected]>
balena-io · Nov 1, 2024 · 563cd4a · 563cd4a
1 parent b70d736
commit 563cd4a
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diff --git a/Dockerfile.template b/Dockerfile.template
@@ -1,11 +1,13 @@
 FROM balenalib/%%RESIN_MACHINE_NAME%%-alpine:latest
 
-RUN apk update && apk add bash py-pip lockfile-progs --no-cache && \
+WORKDIR /usr/src/app
+
+RUN apk update && apk add bash python3 lockfile-progs --no-cache && \
+    python3 -m venv venv && \
+    source venv/bin/activate && \
     pip install --upgrade pip && \
     pip install flask
 
-WORKDIR /usr/src/app
-
 COPY . ./
 
 CMD ["bash", "start.sh"]
diff --git a/start.sh b/start.sh
@@ -1,4 +1,7 @@
 #!/bin/bash
+
+source venv/bin/activate
+
 python server.py &
 for ((i=1;i<=5;i++));
 do