diff --git a/opencode/Dockerfile b/opencode/Dockerfile
index e5b3ba7..a903543 100644
--- a/opencode/Dockerfile
+++ b/opencode/Dockerfile
@@ -21,7 +21,7 @@ FROM builder-${TARGETPLATFORM//\//_} AS release
 RUN tar -xvf ./opencode.tgz -C /usr/bin
 RUN rm opencode.tgz
 ADD --chown=opencode:opencode ./opencode.json /etc/opencode/opencode.json
-ENV OPENCODE_CONFIG=/etc/opencode/opencode.json
+RUN echo OPENCODE_CONFIG=/etc/opencode/opencode.json >> /etc/environment
 USER opencode
 WORKDIR /workspace
 ENTRYPOINT ["opencode"]