fix: Dockerfile should allow for version arg

Author: johnson2427

Dockerfile

@@ -3,6 +3,7 @@
 #---------------------------------------------------------------------------------------------
 
 # Build with builder image to reduce image size
+ARG APE_VERSION
 FROM python:3.11 as builder
 USER root
 WORKDIR /wheels
@@ -13,7 +14,7 @@ RUN pip install --upgrade pip && pip install wheel
 RUN pip wheel . --wheel-dir=/wheels
 
 # Install from wheels
-FROM ghcr.io/apeworx/ape:latest-slim
+FROM ghcr.io/apeworx/ape:${APE_VERSION:-latest-slim}
 USER root
 COPY --from=builder /wheels /wheels
 RUN pip install --upgrade pip \