diff --git a/Dockerfile b/Dockerfile
index e00854f..c5c0675 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,16 +1,13 @@
 FROM python:alpine
 
-RUN apk add --no-cache curl
-
-ENV SUPERCRONIC_URL=https://github.com/aptible/supercronic/releases/download/v0.2.33/supercronic-linux-amd64 \
-    SUPERCRONIC_SHA1SUM=71b0d58cc53f6bd72cf2f293e09e294b79c666d8 \
-    SUPERCRONIC=supercronic-linux-amd64
-
-RUN curl -fsSLO "$SUPERCRONIC_URL" \
- && echo "${SUPERCRONIC_SHA1SUM}  ${SUPERCRONIC}" | sha1sum -c - \
- && chmod +x "$SUPERCRONIC" \
- && mv "$SUPERCRONIC" "/usr/local/bin/${SUPERCRONIC}" \
- && ln -s "/usr/local/bin/${SUPERCRONIC}" /usr/local/bin/supercronic
+RUN apk add --no-cache curl \
+ && SUPERCRONIC_URL=https://github.com/aptible/supercronic/releases/download/v0.2.33/supercronic-linux-amd64 \
+ && SUPERCRONIC_SHA1SUM=71b0d58cc53f6bd72cf2f293e09e294b79c666d8 \
+ && curl -fsSLO "$SUPERCRONIC_URL" \
+ && echo "${SUPERCRONIC_SHA1SUM}  supercronic-linux-amd64" | sha1sum -c - \
+ && chmod +x supercronic-linux-amd64 \
+ && mv supercronic-linux-amd64 /usr/local/bin/supercronic \
+ && apk del curl
 
 RUN pip install --no-cache-dir subscleaner