[+] Added Makefile + Checking script for Go version

Dockerfile

@@ -0,0 +1,23 @@
+FROM ubuntu:22.04
+
+WORKDIR /app/
+
+RUN apt-get update
+RUN apt-get upgrade -y
+
+RUN apt-get install -y ruby
+RUN apt-get install -y curl
+RUN apt-get install -y make
+
+RUN rm -rf /usr/local/go
+
+RUN curl -L -o /tmp/go.tar.gz https://go.dev/dl/go1.23.3.linux-amd64.tar.gz
+RUN tar -C /usr/local -xzf /tmp/go.tar.gz
+
+ENV PATH=/usr/local/go/bin:$PATH
+
+COPY ./ /app/
+
+RUN make
+
+ENTRYPOINT [ "/app/vulnapi" ]

Makefile

@@ -0,0 +1,21 @@
+BIN = vulnapi
+.DEFAULT_GOAL := $(BIN)
+MIN_GO_VERSION = go1.23.0
+
+.PHONY: check_versions clean
+check_versions:
+ifeq (, $(shell which go))
+	$(error "No go command in $(PATH), consider doing apt-get install golang-go")
+endif
+ifeq (, $(shell which ruby))
+	$(error "No ruby command in $(PATH), consider doing apt-get install ruby")
+endif
+ifneq (0, $(shell ruby ./scripts/verify_go_version.rb $(MIN_GO_VERSION) 2>&1 >/dev/null; echo $$?))
+	$(error "Your go version is too old/invalid !")
+endif
+
+$(BIN):	check_versions
+	go build -o $(BIN)
+
+clean:	check_versions
+	go clean

scripts/verify_go_version.rb

@@ -0,0 +1,55 @@
+require 'open3'
+
+def error(message, code = 1)
+  # STDERR.puts(message)
+  exit(code)
+end
+
+def usage
+  "Usage: #{File.basename($PROGRAM_NAME)} [target min go version]"
+end
+
+def get_system_go_version
+  go_path, status = Open3.capture2('which go')
+  error('go: command not found') unless status.success?
+
+  output, status = Open3.capture2('go version')
+  error('Failed to retrieve Go version') unless status.success?
+
+  pattern = /\bgo(\d+)\.(\d+)\.(\d+)\b/
+  match = output.match(pattern)
+  if match
+    major, minor, patch = match.captures.map(&:to_i)
+    return [major, minor, patch]
+  end
+
+  error("System Go version doesn't match the Go versioning system (goXX.YY.ZZ)!")
+end
+
+def parse_go_semver(entry)
+  pattern = /^go(\d+)\.(\d+)\.(\d+)$/
+  match = entry.match(pattern)
+  if match
+    major, minor, patch = match.captures.map(&:to_i)
+    return [major, minor, patch]
+  end
+
+  error("\"#{entry}\" doesn't match the Go versioning system (goXX.YY.ZZ)!")
+end
+
+def main
+  error(usage, 1) unless ARGV.size == 1
+
+  min_version = parse_go_semver(ARGV[0])
+  cur_version = get_system_go_version
+
+  3.times do |i|
+    if cur_version[i] < min_version[i]
+      error("Installed Go version go#{cur_version.join('.')} is older than the minimum required version go#{min_version.join('.')}")
+    end
+  end
+
+  0
+end
+
+exit(main)