Merge pull request #78 from tsuyoshicho/fix/dockerfile

Dockerfile

@@ -6,17 +6,19 @@ ENV REDPEN_VERSION=1.10.4
 # reviewdog
 ENV REVIEWDOG_VERSION=v0.17.0
 
-RUN apk --update add git curl jq wget && \
-    rm -rf /var/lib/apt/lists/* && \
-    rm /var/cache/apk/*
+# hadolint ignore=DL3018
+RUN apk add --no-cache git jq wget && \
+    rm -rf /var/lib/apt/lists/*
+# hadolint ignore=DL4006
 RUN wget -O - -q https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh| sh -s -- -b /usr/local/bin/ ${REVIEWDOG_VERSION}
-RUN curl -sL https://api.github.com/repos/redpen-cc/redpen/releases/tags/redpen-${REDPEN_VERSION} -o - \
+# hadolint ignore=DL4006
+RUN wget -O - -q https://api.github.com/repos/redpen-cc/redpen/releases/tags/redpen-${REDPEN_VERSION} \
       | jq -r .assets[].browser_download_url \
       | grep -i "tar.gz" \
       | head -n 1 \
       | wget -qi - -O redpen-${REDPEN_VERSION}.tar.gz && \
     tar xvfp redpen-${REDPEN_VERSION}.tar.gz -C / && \
-    rm *.tar.gz && \
+    rm redpen-${REDPEN_VERSION}.tar.gz && \
     find . -maxdepth 1 -type d -name "redpen*" -print0 | xargs -0 -I{} mv {} redpen
 
 ENV PATH="/redpen/bin:${PATH}"