Update Dockerfile

Dockerfile

@@ -8,14 +8,13 @@ FROM ubuntu:rolling
 WORKDIR /workspaces
 
 # Set ARGs as ENVs so they're available in RUN
-ENV PLATFORM=$platform
-ENV TARGET_PLATFORM=$target_platform
-ENV COMPILER_NIX_NAME=$compiler_nix_name
-ENV MINIMAL=$minimal
-ENV IOG=$iog
+ENV PLATFORM_=$platform
+ENV TARGET_PLATFORM_=$target_platform
+ENV COMPILER_NIX_NAME_=$compiler_nix_name
+ENV MINIMAL_=$minimal
+ENV IOG_=$iog
 
 RUN SUFFIX='' \
- && if [ "$MINIMAL" = "true" ]; then SUFFIX="$SUFFIX-minimal"; fi \
- && if [ "$IOG" = "true" ]; then SUFFIX="$SUFFIX-iog"; fi \
- && echo "foobar" \
- && echo "input-output-hk/devx $PLATFORM.$COMPILER_NIX_NAME$TARGET_PLATFORM$SUFFIX-env"
+ && if [ "${MINIMAL_}" = "true" ]; then SUFFIX_="${SUFFIX}-minimal"; fi \
+ && if [ "${IOG_}" = "true" ]; then SUFFIX="${SUFFIX}-iog"; fi \
+ && echo "input-output-hk/devx ${PLATFORM_}.${COMPILER_NIX_NAME_}${TARGET_PLATFORM_}${SUFFIX}-env"