From 17b538f297f93f38a66b53181e9b7dd27a3deb16 Mon Sep 17 00:00:00 2001
From: Romain de Laage <romain.delaage@rdelaage.ovh>
Date: Thu, 4 Mar 2021 19:32:46 +0100
Subject: [PATCH] Add docker image

---
 Dockerfile         | 20 ++++++++++++++++++++
 Makefile           | 12 +++++++++---
 README.md          | 23 +++++++++++++++++++++++
 docker-compose.yml | 15 +++++++++++++++
 start.sh           | 41 +++++++++++++++++++++++++++++++++++++++++
 5 files changed, 108 insertions(+), 3 deletions(-)
 create mode 100644 Dockerfile
 create mode 100644 docker-compose.yml
 create mode 100644 start.sh

diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..cb90961
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,20 @@
+FROM golang:1.16.0-buster as BUILD
+
+COPY . mastogem
+
+RUN cd mastogem && \
+    go build -o /mastogem
+
+FROM debian:buster-slim
+
+COPY --from=BUILD /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+
+COPY --from=BUILD /mastogem /mastogem
+
+COPY start.sh /start.sh
+
+RUN chmod +x /start.sh
+
+EXPOSE 1965
+
+CMD "/start.sh"
diff --git a/Makefile b/Makefile
index debea2b..9680e49 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,15 @@
-all: amd64 arm7
+VERSION=1.0
+SOURCES=$(shell find . -name "*.go" -type f)
 
-amd64:
+all: amd64 arm7 dockerimage
+
+amd64: $(SOURCES)
 	mkdir -p build
 	GOOS=linux GOARCH=amd64 go build -o build/mastogem-amd64
 
-arm7:
+arm7: $(SOURCES)
 	mkdir -p build
 	GOOS=linux GOARCH=arm GOARM=7 go build -o build/mastogem-arm7
+
+dockerimage: Dockerfile start.sh $(SOURCES)
+	sudo docker build -t dervom/mastogem:$(VERSION) .
diff --git a/README.md b/README.md
index a76dbea..ba5aeb3 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,29 @@ You should provide the `MASTOGEM_CONFIG_PATH` environment variable when launchin
 
 To run the program simply run the executable file corresponding to your architecture in the `build` folder. Make sure the certificate and the key where generated before.
 
+## Run with Docker
+
+You could use docker or docker-compose to run this program, you must set a `MASTODON_BASE_URL` variable corresponding to the URL to your Mastodon instance (without the tailing slash), you also must bind a certificate (`/cert.pem`) and a key (`/key.rsa`).
+
+You can set a `TITLE` and a `HOME_MESSAGE` variables.
+
+### Docker
+
+```
+sudo docker run	-it \
+		-p 1965:1965 \
+		-e MASTODON_BASE_URL=https://mamot.fr \
+		--mount type=bind,source=$(pwd)/certs/cert.pem,destination=/cert.pem \
+		--mount type=bind,source=$(pwd)/certs/key.rsa,destination=/key.rsa \ 
+		dervom/mastogem
+```
+
+### Docker-compose
+
+```
+sudo docker-compose up -d
+```
+
 ## Contribute
 
 You contributions are welcomed, you can send me an email (romain.delaage@rdelaage.ovh).
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..f3807f8
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,15 @@
+version: "3.7"
+
+services:
+  mastogem:
+    image: dervom/mastogem:1.0
+    build: .
+    container_name: mastogem
+    volumes:
+      - ./certs/key.rsa:/key.rsa:ro
+      - ./certs/cert.pem:/cert.pem:ro
+    environment:
+      MASTODON_BASE_URL: "https://mamot.fr"
+    ports:
+      - 1965:1965
+    restart: unless-stopped
diff --git a/start.sh b/start.sh
new file mode 100644
index 0000000..8780af4
--- /dev/null
+++ b/start.sh
@@ -0,0 +1,41 @@
+#! /bin/sh
+
+if [ -z "$MASTODON_BASE_URL" ]
+then
+	echo "You must set the MASTODON_BASE_URL variable"
+	exit 1
+fi
+
+if [ ! -f /cert.pem ]
+then
+	echo "You must bind a certificate at /cert.pem"
+	exit 1
+fi
+
+if [ ! -f /key.rsa ]
+then
+	echo "You must bind a private key at /key.rsa"
+fi
+
+if [ -z "$TITLE" ]
+then
+	TITLE=MastoGem
+fi
+
+if [ -z "$HOME_MESSAGE" ]
+then
+	HOME_MESSAGE="Welcome on MastoGem, a Mastodon proxy for Gemini !"
+fi
+
+cat << EOF > /config.json
+{
+	"listen": "0.0.0.0:1965",
+	"cert_path": "/cert.pem",
+	"key_path": "/key.rsa",
+	"base_url": "$MASTODON_BASE_URL",
+	"title": "$TITLE",
+	"home_message": "$HOME_MESSAGE"
+}
+EOF
+
+MASTOGEM_CONFIG_PATH=/config.json /mastogem