build(docker): 💚 add custom entrypoint script to our CI image

This should be also suitable for local development via Docker too.

Signed-off-by: Andrei Jiroh Halili <ajhalili2006@gmail.com>

.vscode/settings.json

@@ -14,7 +14,8 @@
     "readme",
     "meta",
     "global",
-    "deps-dev"
+    "deps-dev",
+    "docker"
   ],
   "conventionalCommits.autoCommit": false,
   "conventionalCommits.promptCI": true,

docker/Dockerfile

@@ -1,14 +1,20 @@
 FROM squidfunk/mkdocs-material
 
 # https://squidfunk.github.io/mkdocs-material/setup/setting-up-social-cards/#linux but for Alpine
-RUN apk add \
+RUN apk add --no-cache \
      cairo-dev \
      freetype-dev \
      libffi-dev \
      jpeg-dev \
      libpng-dev \
-     zlib-dev
+     zlib-dev \
+     bash \
+     coreutils
 RUN pip3 install \
       mkdocs-git-revision-date-localized-plugin \
       pillow \
       cairosvg
+
+COPY entrypoint.sh /usr/local/bin/entrypoint.sh
+ENTRYPOINT [ "/usr/local/bin/entrypoint.sh" ]
+CMD [ "serve" ]

docker/entrypoint.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+if [[ $DEBUG != "" ]]; then
+  set -x
+fi
+
+if [[ $1 = "serve" ]] || [[ $1 == "build" ]] | [[ $1 == "gh-deploy" ]] || [[ $1 == "new" ]]; then
+  exec mkdocs $@
+else
+  $@
+fi