[2021] Fix rust image

ACSimon33 · ACSimon33 · commit 54e09c5095ea · 2024-12-12T11:51:26.000+01:00
diff --git a/2021/Dockerfile b/2021/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
-FROM rust:1.70.0
+FROM rust:1.67.0
 
 # Setup rust toolchain
 RUN rustup component add rustfmt
-RUN cargo install cargo2junit
+RUN cargo install --locked cargo2junit
