Correct includes

.dockerignore

@@ -6,8 +6,21 @@
 !/configure
 !/configure.ac
 !/install-sh
+!/Makefile.am
 !/Makefile.in
 !/snmp_bulkget.c
 !/snmp_bulkget.h
 !/utils.c
 !/utils.h
+!/check_interfaces.c
+!/AUTHORS
+!/NEWS
+!/COPYING
+!/config.guess
+!/config.sub
+!/missing
+!/compile
+!/ChangeLog
+!/INSTALL
+!/depcomp
+!/README.md

Dockerfile

@@ -7,17 +7,20 @@ ONBUILD ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update \
     && apt-get install -y \
          build-essential \
+         autoconf \
          libsnmp-dev \
     && rm -rf /var/lib/apt/lists/*
 COPY . .
-RUN ./configure --libexecdir=/src \
+COPY ./README.md ./README
+RUN ls -R \
+    && ./configure --libexecdir=/src \
     && make $target
 
 FROM debian:stable-slim
 ONBUILD ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update \
     && apt-get install -y \
-         libsnmp30 \
+         libsnmp40 \
     && rm -rf /var/lib/apt/lists/*
 COPY --from=0 /src/check_interfaces /check_interfaces
 

Makefile.in

@@ -161,7 +161,7 @@ am__define_uniq_tagged_files = \
   done | $(am__uniquify_input)`
 AM_RECURSIVE_TARGETS = cscope
 am__DIST_COMMON = $(srcdir)/Makefile.in AUTHORS COPYING ChangeLog \
-	INSTALL NEWS README.md compile config.guess config.sub depcomp \
+	INSTALL NEWS README compile config.guess config.sub depcomp \
 	install-sh missing
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)

check_interfaces.c

@@ -1,9 +1,18 @@
+
+
+// This one is needed on FreeBSD and it has to be before the others or at least some of them
+#include <getopt.h>
+
+
 #include "snmp_bulkget.h"
 #include "utils.h"
 #include <net-snmp/net-snmp-config.h>
 #include <stdbool.h>
 #include <sys/time.h>
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
 
 /*
  * text strings to output in the perfdata