ci: add Super-Linter (#323)

dev.Dockerfile

@@ -13,6 +13,7 @@ ENV PHPIZE_DEPS \
     pkg-config \
     re2c
 
+# hadolint ignore=DL3009
 RUN apt-get update && \
     apt-get -y --no-install-recommends install \
     $PHPIZE_DEPS \
@@ -41,8 +42,8 @@ RUN apt-get update && \
     && \
     apt-get clean 
 
-RUN git clone --branch=PHP-8.3 https://github.com/php/php-src.git && \
-    cd php-src && \
+WORKDIR /usr/local/src/php
+RUN git clone --branch=PHP-8.3 https://github.com/php/php-src.git . && \
     # --enable-embed is only necessary to generate libphp.so, we don't use this SAPI directly
     ./buildconf --force && \
     ./configure \
@@ -51,18 +52,19 @@ RUN git clone --branch=PHP-8.3 https://github.com/php/php-src.git && \
         --disable-zend-signals \
         --enable-zend-max-execution-timers \
         --enable-debug && \
-    make -j$(nproc) && \
+    make -j"$(nproc)" && \
     make install && \
     ldconfig && \
     cp php.ini-development /usr/local/lib/php.ini && \
-    echo "zend_extension=opcache.so\nopcache.enable=1" >> /usr/local/lib/php.ini &&\
+    echo "zend_extension=opcache.so" >> /usr/local/lib/php.ini && \
+    echo "opcache.enable=1" >> /usr/local/lib/php.ini && \
     php --version
 
 WORKDIR /go/src/app
-
 COPY . .
 
-RUN cd caddy/frankenphp && \
-    go build
+WORKDIR /go/src/app/caddy/frankenphp
+RUN go build
 
+WORKDIR /go/src/app
 CMD [ "zsh" ]