From a96e294e9772dcaaacc8182f2159abfb0d58c7cd Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Sat, 9 Apr 2022 19:36:05 +0200
Subject: frontend: minimize the image

---
 docker/frontend/Dockerfile                    | 39 ++++++++++++++++++++-------
 docker/frontend/cmd.sh                        |  2 +-
 docker/frontend/etc/nginx/conf.d/default.conf |  4 +--
 3 files changed, 32 insertions(+), 13 deletions(-)

diff --git a/docker/frontend/Dockerfile b/docker/frontend/Dockerfile
index 5fb1960..337d4f6 100644
--- a/docker/frontend/Dockerfile
+++ b/docker/frontend/Dockerfile
@@ -1,19 +1,38 @@
-FROM nginx:1
-
-RUN export DEBIAN_FRONTEND=noninteractive && \
-    runtime_deps='cgit cmark-gfm fcgiwrap tini' && \
-    apt-get update && \
-    apt-get install -y --no-install-recommends $runtime_deps && \
-    # Install the latest Pygments (so that it would highlight CMakeLists.txt, etc.):
-    apt-get install -y --no-install-recommends python3-pip && \
-    pip3 install --no-cache-dir pygments~=2.0 && \
+FROM nginx:1-alpine AS base
+
+FROM base AS builder
+
+# Install cmark-gfm:
+ARG CMARK_GFM_VERSION=0.29.0.gfm.3
+ADD ["https://github.com/github/cmark-gfm/archive/refs/tags/$CMARK_GFM_VERSION.zip", "/"]
+
+RUN apk add --no-cache cmake g++ make python2 py3-pip && \
+    unzip -- "$CMARK_GFM_VERSION.zip" && \
+    cd -- "cmark-gfm-$CMARK_GFM_VERSION" && \
+    make INSTALL_PREFIX=/cmark-gfm && \
+    make test && \
+    make install
+
+# Install the latest Pygments (so that it would highlight CMakeLists.txt, etc.):
+ARG PYGMENTS_VERSION=~=2.0
+
+RUN apk add --no-cache py3-pip && \
+    pip install --no-cache-dir --target=/pygments "pygments$PYGMENTS_VERSION"
+
+FROM base
+
+RUN apk add --no-cache bash cgit fcgiwrap python3 spawn-fcgi tini && \
     # Replace the theme with the one I like better:
     grep -q -F -- "style='pastie'" /usr/lib/cgit/filters/syntax-highlighting.py && \
     sed -i -e "s/style='pastie'/style='vs'/" -- /usr/lib/cgit/filters/syntax-highlighting.py
 
+COPY --from=builder ["/cmark-gfm", "/usr/local/"]
+COPY --from=builder ["/pygments", "/pygments/"]
+ENV PYTHONPATH="/pygments"
+
 COPY ["etc/", "/etc/"]
 COPY ["usr/", "/usr/"]
 COPY ["cmd.sh", "/"]
 
-ENTRYPOINT ["/usr/bin/tini", "--"]
+ENTRYPOINT ["/sbin/tini", "--"]
 CMD ["/cmd.sh"]
diff --git a/docker/frontend/cmd.sh b/docker/frontend/cmd.sh
index 0795d4c..25ea3c7 100755
--- a/docker/frontend/cmd.sh
+++ b/docker/frontend/cmd.sh
@@ -11,6 +11,6 @@ spawn-fcgi \
     -M 0755 \
     -F 10 \
     -s /run/fcgiwrap.sock \
-    /usr/sbin/fcgiwrap
+    /usr/bin/fcgiwrap
 
 exec nginx -g 'daemon off;'
diff --git a/docker/frontend/etc/nginx/conf.d/default.conf b/docker/frontend/etc/nginx/conf.d/default.conf
index 1fcbf13..dc27e85 100644
--- a/docker/frontend/etc/nginx/conf.d/default.conf
+++ b/docker/frontend/etc/nginx/conf.d/default.conf
@@ -7,7 +7,7 @@ server {
         include fastcgi_params;
         fastcgi_pass unix:/run/fcgiwrap.sock;
 
-        fastcgi_param SCRIPT_FILENAME /usr/lib/cgit/cgit.cgi;
+        fastcgi_param SCRIPT_FILENAME /usr/share/webapps/cgit/cgit.cgi;
 
         # This looks stupid. Can I substitute any variable for $fastcgi_path_info?
         fastcgi_split_path_info ^(/?)(.+)$;
@@ -15,6 +15,6 @@ server {
     }
 
     location /cgit/ {
-        alias /usr/share/cgit/;
+        alias /usr/share/webapps/cgit/;
     }
 }
-- 
cgit v1.2.3