Started adding dockerfile

HaWeb/Dockerfile

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+FROM alpine:latest
+WORKDIR /app
+
+RUN apk add --no-cache \
+    unzip \
+    ca-certificates \
+    build-base
+
+# download and unzip PocketBase
+ADD https://go.dev/dl/go1.22.3.linux-amd64.tar.gz /tmp/go.tar.gz 
+RUN tar -C /usr/local -xzf /tmp/go.tar.gz
+RUN export PATH=$PATH:/usr/local/go/bin
+
+# uncomment to copy the local pb_migrations dir into the image
+COPY . . 
+RUN /usr/local/go/bin/go build -tags "sqlite_fts5 sqlite_json sqlite_foreign_keys sqlite_vtable sqlite_math_functions"
+RUN ./myapp migrate --dev
+RUN ./myapp migrateimages --dev
+RUN ./myapp migratestatics --dev
+
+EXPOSE 8080
+
+# start PocketBase
+CMD ["./myapp", "serve", "--http=0.0.0.0:8080"]