fix(fpm): add patch for apk

See also: jordansissel/fpm#1227

Dockerfile

@@ -10,11 +10,17 @@ ENV DEBIAN_FRONTEND noninteractive
 
 SHELL ["/bin/bash", "-e", "-x", "-c"]
 
+COPY patches/fpm-apk-archive-header.patch /tmp/fpm.patch
+
 RUN if [[ "$FPM_VERSION" == 'latest' ]]; then \
         gem install --no-document fpm; \
     else \
         gem install --no-document fpm -v "$FPM_VERSION"; \
-    fi \
+    fi
+
+# https://github.com/jordansissel/fpm/issues/1227
+RUN cd $(gem env gemhome)/gems/fpm-* \
+    && patch -p 0 -ruN < /tmp/fpm.patch \
     && mkdir -pv /src/ \
     && fpm --version
 

patches/fpm-apk-archive-header.patch

@@ -0,0 +1,12 @@
+diff --color -Naur lib/fpm/package/apk.rb.orig lib/fpm/package/apk.rb
+--- lib.orig/fpm/package/apk.rb	2022-12-23 14:03:55.583865965 -0800
++++ lib/fpm/package/apk.rb	2022-12-23 14:06:56.040703096 -0800
+@@ -252,7 +252,7 @@
+
+           # directories have a magic string inserted into their name
+           full_record_path = extension_header[TAR_NAME_OFFSET_START..TAR_NAME_OFFSET_END].delete("\0")
+-          full_record_path = add_paxstring(full_record_path)
++          # full_record_path = add_paxstring(full_record_path)
+
+           # hash data contents with sha1, if there is any content.
+           if(typeflag == '5')