Init commit.

environment_variables.txt

@@ -0,0 +1 @@
+${DOMAIN_NAME}

nginx.Dockerfile

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+# FROM nginx:alpine
+FROM alpine:latest
+
+RUN apk update && apk upgrade && apk add nginx gettext && \
+    rm -r /etc/nginx
+
+COPY start-nginx.sh /usr/local/bin/
+COPY environemnt_variables.txt /
+
+USER root
+ENTRYPOINT ["/bin/sh", "-c"]
+CMD ["start-nginx.sh"]

start-nginx.sh

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+#!/usr/bin/env sh
+
+set -x
+
+enable_server() {
+    for name in "$@"; do
+        src_dir="/etc/nginx/sites-available"
+        dst_dir="/etc/nginx/sites-enabled"
+        mkdir -p "$dst_dir"
+        envsubst '${DOMAIN_NAME}' < "$src_dir/$name.conf" > "$dst_dir/$name.conf"
+    done
+}
+
+enable_ssh_server() {
+    for name in "$@"; do
+        src_dir="/etc/nginx/ssh-available"
+        dst_dir="/etc/nginx/ssh-enabled"
+        mkdir -p "$dst_dir"
+        envsubst '${DOMAIN_NAME}' < "$src_dir/$name.conf" > "$dst_dir/$name.conf"
+    done
+}
+
+sub_env_vars="$(cat /environment_variables.txt)"
+
+echo "Enabling servers"
+(
+    pushd "/etc/nginx/sites-available" || exit $?
+    for f in *.conf; do
+        envsubst "$sub_env_vars" < "$f" > "../sites-enabled/$f"
+    done
+)
+
+echo "Starting nginx"
+exec nginx -g 'daemon off;' -c /etc/nginx/nginx.conf