Try

containers/fedora/Containerfile

@@ -25,6 +25,7 @@ COPY --chown=user:user config/helix/ .config/helix/
 COPY config/bin /usr/local/bin
 
 # === Setup PNPM & install language servers ===
+SHELL ["/bin/bash", "-c"]
 RUN /bin/bash -c "pnpm setup && . /home/user/.bashrc && pnpm i -g deno bash-language-server vscode-langservers-extracted dockerfile-language-server-nodejs \
     typescript typescript-language-server"