fix node version

Author: birm

Dockerfile

@@ -1,14 +1,12 @@
-FROM node:latest
+FROM node:25-alpine
+RUN apk add --no-cache git
+RUN apk add --no-cache openssl
 RUN mkdir /src
 COPY . /src
 WORKDIR /src
 RUN npm install
 ARG viewer
 ARG fork
-RUN apt-get update
-RUN apt-get install git -q -y
-RUN apt-get install sendmail -q -y
-RUN git clone https://github.com/${fork:-camicroscope}/camicroscope.git --branch=${viewer:-master}
 EXPOSE 4010
 
 CMD node caracal.js