Replace ERD (Haskell) with erd-go #343

Dockerfile

@@ -1,3 +1,5 @@
+# Golang version defined in https://github.com/kaishuu0123/erd-go/blob/${ERD_VERSION}/go.mod#L3
+ARG ERD_GOLANG_VERSION=1.15
 ARG alpine_version=3.17.2
 FROM alpine:${alpine_version} AS base
 
@@ -45,30 +47,21 @@ RUN apk add --no-cache ruby \
   "asciidoctor-pdf:${ASCIIDOCTOR_PDF_VERSION}"
 
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
-# Haskell build for: erd
+# Install erd-go (https://github.com/kaishuu0123/erd-go) as replacement for erd (https://github.com/BurntSushi/erd)
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
-# Alpine 3.16 is the last known working version for building erd (dynamic linking)
-FROM alpine:3.16 AS erd-builder
-
-## Always use the latest dependencies available for the current Alpine distribution
+FROM golang:${ERD_GOLANG_VERSION}-alpine as erd-builder
+ARG ERD_VERSION=v2.0.0
+## Always use the latest git package
+# go install or go get cannot be used the go.mod syntax of erd-go is not following the Golang semver properties,
+# leading to errors whatever method is used.
+# This fixes it by using a go build method to generate the binary instead.
 # hadolint ignore=DL3018
-RUN apk add --no-cache \
-  alpine-sdk \
-  cabal \
-  ghc-dev \
-  ghc \
-  gmp-dev \
-  gnupg \
-  libffi-dev \
-  linux-headers \
-  perl-utils \
-  wget \
-  xz \
-  zlib-dev \
-  && cabal v2-update \
-  && cabal v2-install erd
+RUN apk add --no-cache git \
+  && git clone https://github.com/kaishuu0123/erd-go -b "${ERD_VERSION}" /app
+WORKDIR /app
+RUN CGO_ENABLED=0 GOOS=linux go build
 
-# # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
+# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # \
 # Final image
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 FROM main-minimal AS main
@@ -139,7 +132,9 @@ RUN apk add --no-cache \
   seqdiag \
   && apk del -r --no-cache .pythonmakedepends
 
-COPY --from=erd-builder /root/.cabal/bin/erd /bin/
+COPY --from=erd-builder /app/erd-go /usr/local/bin/
+# for backward compatibility
+RUN ln -snf /usr/local/bin/erd-go /usr/local/bin/erd
 
 WORKDIR /documents
 VOLUME /documents

README.adoc

@@ -41,6 +41,8 @@ This image uses Alpine Linux {ALPINE_VERSION} as base image.
 
 NOTE: Docker Engine link:https://docs.docker.com/engine/release-notes/#20100[20.10] or later is required (or any container engine supporting link:https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.14.0[Alpine 3.14]) to avoid unexpected `No such file or directory` errors (such as link:https://github.com/asciidoctor/docker-asciidoctor/issues/214[#214] or link:https://github.com/asciidoctor/docker-asciidoctor/issues/215[#215]).
 
+NOTE: This image uses the Go-based https://github.com/kaishuu0123/erd-go/[erd-go] instead of the original Haskell-based https://github.com/BurntSushi/erd[erd] to allow the Docker image to be provided as a multi-platform image.
+
 == How to use it
 
 Just run:

README.md

@@ -38,6 +38,12 @@ Docker Engine [20.10](https://docs.docker.com/engine/release-notes/#20100) or la
 
 </div>
 
+<div class="note">
+
+This image uses the Go-based [erd-go](https://github.com/kaishuu0123/erd-go/) instead of the original Haskell-based [erd](https://github.com/BurntSushi/erd) to allow the Docker image to be provided as a multi-platform image.
+
+</div>
+
 ## How to use it
 
 Just run: