Installing bash

Dockerfile

@@ -7,7 +7,7 @@ ARG SHA=beb91419245395bd69a4a6edad5ca3ec1a8b64e41457672dc687c173a495f034
 ARG BASE_URL=https://apache.osuosl.org/maven/maven-3/${MAVEN_VERSION}/binaries
 
 RUN mkdir -p /usr/share/maven /usr/share/maven/ref \
-  && apk update && apk add curl && apk add git \
+  && apk update && apk add curl && apk add git && apk add bash \
   && curl -fsSl -o /tmp/apache-maven.tar.gz ${BASE_URL}/apache-maven-$MAVEN_VERSION-bin.tar.gz \
   && echo "${SHA}  /tmp/apache-maven.tar.gz" | sha256sum -c - \
   && tar -xzf /tmp/apache-maven.tar.gz -C /usr/share/maven --strip-components=1 \

mvn-entrypoint.sh

-#! /bin/sh
+#! /bin/bash -eu
 
 set -o pipefail
 
@@ -26,13 +26,13 @@ copy_reference_files() {
   if (touch "${log}" > /dev/null 2>&1)
   then
       echo "--- Copying files at $(date)" >> "$log"
-      find /usr/share/maven/ref/ -type f -exec sh -c 'copy_reference_file /usr/share/maven/ref/ "$1" "$2"' _ {} "$log" \;
+      find /usr/share/maven/ref/ -type f -exec bash -eu -c 'copy_reference_file /usr/share/maven/ref/ "$1" "$2"' _ {} "$log" \;
   else
     echo "Can not write to ${log}. Wrong volume permissions? Carrying on ..."
   fi
 }
 
-export copy_reference_file
+export -f copy_reference_file
 copy_reference_files
 
 exec "$@"