Workaround breaking glibc installation due to nsswitch.conf conflict: s…

…gerrand/alpine-pkg-glibc#185

Dockerfile

@@ -23,11 +23,13 @@ RUN ALPINE_GLIBC_BASE_URL="https://github.com/sgerrand/alpine-pkg-glibc/releases
         "$ALPINE_GLIBC_BASE_URL/$ALPINE_GLIBC_PACKAGE_VERSION/$ALPINE_GLIBC_BASE_PACKAGE_FILENAME" \
         "$ALPINE_GLIBC_BASE_URL/$ALPINE_GLIBC_PACKAGE_VERSION/$ALPINE_GLIBC_BIN_PACKAGE_FILENAME" \
         "$ALPINE_GLIBC_BASE_URL/$ALPINE_GLIBC_PACKAGE_VERSION/$ALPINE_GLIBC_I18N_PACKAGE_FILENAME" && \
-    apk add --no-cache \
+    mv /etc/nsswitch.conf /etc/nsswitch.conf.bak && \
+    apk add --no-cache --force-overwrite \
         "$ALPINE_GLIBC_BASE_PACKAGE_FILENAME" \
         "$ALPINE_GLIBC_BIN_PACKAGE_FILENAME" \
         "$ALPINE_GLIBC_I18N_PACKAGE_FILENAME" && \
     \
+    mv /etc/nsswitch.conf.bak /etc/nsswitch.conf && \
     rm "/etc/apk/keys/sgerrand.rsa.pub" && \
     (/usr/glibc-compat/bin/localedef --force --inputfile POSIX --charmap UTF-8 "$LANG" || true) && \
     echo "export LANG=$LANG" > /etc/profile.d/locale.sh && \