From 96377203b0ba35b19345528b429e10468007e6e9 Mon Sep 17 00:00:00 2001
From: Filip Pytloun <filip@pytloun.cz>
Date: Thu, 6 Apr 2023 12:35:29 +0200
Subject: [PATCH] Multi-arch build

---
 .dockerignore |  2 ++
 Dockerfile    | 21 ++++++++++++++++++---
 Makefile      | 14 ++++++++++++++
 README.md     |  8 ++++++++
 4 files changed, 42 insertions(+), 3 deletions(-)
 create mode 100644 .dockerignore
 create mode 100644 Makefile
 create mode 100644 README.md

diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..10769eb
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,2 @@
+Makefile
+README.md
diff --git a/Dockerfile b/Dockerfile
index cb5c81a..adb1d56 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,19 @@
-FROM restic/restic:0.15.1
-RUN apk add --no-cache jq curl
+FROM golang:1.19-alpine AS builder
 
-ENTRYPOINT ["/usr/local/bin/backup.sh"]
+ENV RESTIC_VERSION 0.15.1
+
+RUN apk add --no-cache git
+RUN git clone --depth 1 --branch v${RESTIC_VERSION} https://github.com/restic/restic.git /go/src/github.com/restic/restic
+
+WORKDIR /go/src/github.com/restic/restic
+
+RUN go mod download
+RUN go run build.go
+
+FROM alpine:latest AS restic
+
+RUN apk add --update --no-cache ca-certificates fuse openssh-client tzdata jq curl
+
+COPY --from=builder /go/src/github.com/restic/restic/restic /usr/bin
+
+ENTRYPOINT ["/usr/bin/restic"]
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..5704a0d
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,14 @@
+ORG ?= genunix
+VERSION = $(shell grep "ENV RESTIC_VERSION" Dockerfile | awk '{print $$3}')
+PLATFORMS ?= linux/arm/v7,linux/arm64/v8,linux/amd64
+
+build-all: print-version build-version build-latest
+
+print-version:
+	@echo "Building $(ORG)/restic:$(VERSION) for $(PLATFORMS)"
+
+build-version:
+	docker buildx build --push --platform $(PLATFORMS) --tag $(ORG)/restic:$(VERSION) .
+
+build-latest:
+	docker buildx build --push --platform $(PLATFORMS) --tag $(ORG)/restic:latest .
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..064c431
--- /dev/null
+++ b/README.md
@@ -0,0 +1,8 @@
+# Restic Docker image
+
+Restic image for various platforms.
+
+## Build
+
+Just run `make` to build and push everything. Check `ORG` and `PLATFORMS`
+variables to customize.