From f1c9d6108e9c6903a31692d33306af98297c09a7 Mon Sep 17 00:00:00 2001
From: Christopher Hoskin <christopher.hoskin@gmail.com>
Date: Fri, 30 Apr 2021 15:47:07 +0100
Subject: [PATCH] Generate a config file from env vars and template

---
 services/git-bridge/.dockerignore             |  2 ++
 services/git-bridge/Dockerfile                | 11 +++++--
 .../git-bridge/conf/envsubst_template.json    | 32 +++++++++++++++++++
 services/git-bridge/start.sh                  |  3 ++
 4 files changed, 45 insertions(+), 3 deletions(-)
 create mode 100644 services/git-bridge/conf/envsubst_template.json
 create mode 100755 services/git-bridge/start.sh

diff --git a/services/git-bridge/.dockerignore b/services/git-bridge/.dockerignore
index e49947d0fd..7023d49b46 100644
--- a/services/git-bridge/.dockerignore
+++ b/services/git-bridge/.dockerignore
@@ -1,4 +1,6 @@
 *
+!start.sh
+!/conf
 !/lib
 !/src/main
 !/pom.xml
diff --git a/services/git-bridge/Dockerfile b/services/git-bridge/Dockerfile
index 341535c451..be5d498e9f 100644
--- a/services/git-bridge/Dockerfile
+++ b/services/git-bridge/Dockerfile
@@ -21,14 +21,19 @@ RUN make package \
 
 FROM openjdk:8-jre
 
-RUN apt-get update && apt-get install -y git \
+RUN apt-get update && apt-get install -y git gettext-base\
  && rm -rf /var/lib/apt/lists
 
 RUN useradd --create-home node
 
-ENTRYPOINT ["java", "-jar", "/git-bridge.jar"]
-CMD ["/conf/runtime.json"]
+CMD ["/start.sh"]
 
 COPY --from=builder /git-bridge.jar /
 
+COPY conf/envsubst_template.json envsubst_template.json
+COPY start.sh start.sh
+
+RUN mkdir conf
+RUN chown node:node conf
+
 USER node
diff --git a/services/git-bridge/conf/envsubst_template.json b/services/git-bridge/conf/envsubst_template.json
new file mode 100644
index 0000000000..4c0b612523
--- /dev/null
+++ b/services/git-bridge/conf/envsubst_template.json
@@ -0,0 +1,32 @@
+{
+    "port": 8080,
+    "rootGitDirectory": "/tmp/wlgb",
+    "apiBaseUrl": "https://localhost/api/v0",
+    "username": "$GITBRIDGE_USERNAME",
+    "password": "$GITBRIDGE_PASSWORD",
+    "postbackBaseUrl": "https://localhost",
+    "serviceName": "Overleaf",
+    "oauth2": {
+        "oauth2ClientID": "$GITBRIDGE_OAUTH2_CLIENT_ID",
+        "oauth2ClientSecret": "$GITBRIDGE_OAUTH2_CLIENT_SECRET",
+        "oauth2Server": "https://localhost"
+    },
+    "repoStore": {
+        "maxFileNum": 2000,
+        "maxFileSize": 52428800
+    },
+    "swapStore": {
+        "type": "s3",
+        "awsAccessKey": "asdf",
+        "awsSecret": "asdf",
+        "s3BucketName": "com.overleaf.testbucket",
+        "awsRegion": "us-east-1"
+    },
+    "swapJob": {
+        "minProjects": 50,
+        "lowGiB": 128,
+        "highGiB": 256,
+        "intervalMillis": 3600000,
+        "compressionMethod": "gzip"
+    }
+}
diff --git a/services/git-bridge/start.sh b/services/git-bridge/start.sh
new file mode 100755
index 0000000000..0ecf2bf778
--- /dev/null
+++ b/services/git-bridge/start.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+envsubst < /envsubst_template.json > /conf/runtime.json
+java -jar /git-bridge.jar /conf/runtime.json