Move to Alpine to fix the strange httpd error

This commit does the following:
- Use Alpine 3.18 as a base for building container images
- Modify the Apache config files to match what comes with Alpine
- The PID file is now in /var/run/apache2
- Remove deprecated statements from docker-compose.yml and Dockerfile(s)
- Had to make a small change to cert.go. Don't know why. Worked before?

ci/docker/Dockerfile

@@ -1,21 +1,23 @@
-FROM fedora:latest
+FROM alpine:3.18
 EXPOSE 80 443
-LABEL no.uio.contact=usit-gid@usit.uio.no
+LABEL no.uio.contact=usit-dia@usit.uio.no
 LABEL description="Web server for Nivlheim"
 ARG BRANCH=""
 
-RUN dnf install -y httpd mod_ssl procps-ng \
-		unzip file bind-utils npm \
-	&& dnf install -y --releasever=39 openssl \
-	&& dnf clean all \
-	&& rm -rf /var/cache/yum \
-	&& npm install -g handlebars
+RUN apk update && apk upgrade \
+ 	&& apk add apache2 apache2-ssl apache2-utils apache2-proxy procps-ng unzip file bind-tools npm bash curl \
+ 	&& apk add openssl1.1-compat && rm /usr/bin/openssl && ln /usr/bin/openssl1.1 /usr/bin/openssl \
+ 	&& rm -rf /var/cache/apk/*
+RUN npm install -g handlebars
 
 # config
 COPY server/openssl_ca.conf /etc/nivlheim/
 COPY server/client_CA_cert.sh /usr/bin/
-COPY server/httpd_ssl.conf /etc/httpd/conf.d/ssl.conf
-COPY server/httpd.conf /etc/httpd/conf/httpd.conf
+COPY server/httpd_ssl.conf /etc/apache2/conf.d/ssl.conf
+COPY server/httpd.conf /etc/apache2/httpd.conf
+
+# before moving to Alping we used this log directory so let's continue with that
+RUN mkdir /var/log/httpd
 
 # copy the static web content
 COPY server/website /var/www/html/

ci/docker/api_Dockerfile

@@ -11,19 +11,18 @@ COPY server/service/*.go ./
 COPY server/service/database ./database
 COPY server/service/utility ./utility
 
-RUN go build -o /nivlheim -ldflags "-X main.version=${version:-UNDEFINED}"
+RUN CGO_ENABLED=0 go build -o /nivlheim -ldflags "-X main.version=${version:-UNDEFINED}"
 
 ## Deploy
-FROM ubuntu:latest
-MAINTAINER [email protected]
-LABEL [email protected]
+FROM alpine:3.18
+LABEL [email protected]
 LABEL description="Main Nivlheim server exposing API"
 
 EXPOSE 4040
 
 WORKDIR /
 
-RUN apt-get update -qq && apt-get install -yqq ca-certificates
+RUN apk --no-cache add ca-certificates
 COPY --from=build /nivlheim /nivlheim
 COPY server/server.conf /etc/nivlheim/server.conf
 

ci/docker/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3.9"
 services:
   nivlheimweb:
     container_name: docker-nivlheimweb-1

server/client_CA_cert.sh

@@ -97,8 +97,8 @@ if [[ $ACTIVATE -eq 1 ]]; then
 		mv new_nivlheimca.csr nivlheimca.csr
 		mv new_nivlheimca.crt nivlheimca.crt
 		# signal httpd to gracefully restart, if it is running
-		if [[ -f /var/run/httpd/httpd.pid ]]; then
-			kill -usr1 `cat /var/run/httpd/httpd.pid`
+		if [[ -f /var/run/apache2/httpd.pid ]]; then
+			kill -usr1 `cat /var/run/apache2/httpd.pid`
 		fi
 	else
 		echo "There's no new CA certificate to activate"

server/entrypoint.sh

@@ -56,7 +56,7 @@ fi
 function sigterm()
 {
 	echo "Received SIGTERM"
-	kill -term `cat /var/run/httpd/httpd.pid`
+	kill -term `cat /var/run/apache2/httpd.pid`
 }
 trap sigterm SIGTERM